…#67)

* Emit per workload labels for existing per table vttablet metrics (vitessio#12394)

* Emit per workload labels for existing per table vttablet metrics

This adds the possibility to configure vttablet (via CLI flag) to also have a
workload label for existing per table metrics (query counts, query times, query
errors, query rows affected, query rows returned, query error counts). Workload
can be any string that makes sense for the client application. For example, API
endpoint name, controller, batch job name, application name or something else.

This is usefult to be able to gain observability about how the query load is
distributed across different workloads.

This is achieved with two new CLI flags, namely:

* `enable-per-workload-table-metrics`: whether to enable or disable per
  workload metric collection - disabled by default to preserve the current
  behavior, thus making the new feature opt-in only.
* `workload-label`: a string to look for in query comments to identify the
  workload running the current query.

The workload is obtained by parsing query comments of the form:

/* ... <workload_label>=<workload_name>; ... */

For example, if vttablet is started with

`--enable-per-workload-table-metrics --workload-label app_name`

anda query is issued with a comment like

/* ... app_name=shop; ... */

then metrics will look like

```
vttablet_query_counts{plan="Select",table="dual", workload="shop"} 15479
```

instead of

```
vttablet_query_counts{plan="Select",table="dual"} 15479
```

Query comment parsing only takes place if `--enable-per-workload-table-metrics`
is used, as to not incur parsing performance impact if the user does not want
per workload metrics.

Signed-off-by: Eduardo J. Ortega U <5791035+ejortegau@users.noreply.github.com>

* make linter happy

Signed-off-by: Eduardo J. Ortega U <5791035+ejortegau@users.noreply.github.com>

* fix flags e2e test

Signed-off-by: Eduardo J. Ortega U <5791035+ejortegau@users.noreply.github.com>

* Address PR comments:

* Obtain workload information on the vtgate instead of the vttablet, avoiding
  double parsing.
* Treat workload name as a query directive.
* Send workload name from vtgate to vttablet as ExecuteOptions.

Additionally, annotate tabletserver's execution span with the workload name
to also enrich traces with workload name data, in addition to metrics.

Signed-off-by: Eduardo J. Ortega U <5791035+ejortegau@users.noreply.github.com>

* A few fixes:

1. Rebuild some files with `make proto`.
2. Protect against nil ExecuteOptions on the tabletserver.

Signed-off-by: Eduardo J. Ortega U <5791035+ejortegau@users.noreply.github.com>

* Fix flags e2e test

Signed-off-by: Eduardo J. Ortega U <5791035+ejortegau@users.noreply.github.com>

* Address PR comments

Signed-off-by: Eduardo J. Ortega U <5791035+ejortegau@users.noreply.github.com>

* Fixes

Signed-off-by: Eduardo J. Ortega U <5791035+ejortegau@users.noreply.github.com>

* Fix a comment

Signed-off-by: Eduardo J. Ortega U <5791035+ejortegau@users.noreply.github.com>

* Fix e2e flag test

Signed-off-by: Eduardo J. Ortega U <5791035+ejortegau@users.noreply.github.com>

* Update JS code for protobuf changes.

Signed-off-by: Eduardo J. Ortega U <5791035+ejortegau@users.noreply.github.com>

* Fix QueryEngine unit test

Signed-off-by: Eduardo J. Ortega U <5791035+ejortegau@users.noreply.github.com>

* Fix e2e flag test

Signed-off-by: Eduardo J. Ortega U <5791035+ejortegau@users.noreply.github.com>

* Fix spurious tab in comment

Signed-off-by: Eduardo J. Ortega U <5791035+ejortegau@users.noreply.github.com>

* Address PR comment

Don't use dual format flag for new flags - stick with - separated ones.

Signed-off-by: Eduardo J. Ortega U <5791035+ejortegau@users.noreply.github.com>

---------

Signed-off-by: Eduardo J. Ortega U <5791035+ejortegau@users.noreply.github.com>

* Fix cherry-pick

* Add basic metrics to `vttablet` transaction throttler (vitessio#12418)

* Add basic stats to vttablet tx throttler

Signed-off-by: Tim Vaillancourt <tim@timvaillancourt.com>

* test new metrics

Signed-off-by: Tim Vaillancourt <tim@timvaillancourt.com>

* reorder

Signed-off-by: Tim Vaillancourt <tim@timvaillancourt.com>

* short names

Signed-off-by: Tim Vaillancourt <tim@timvaillancourt.com>

* Add max rate

Signed-off-by: Tim Vaillancourt <tim@timvaillancourt.com>

* Move NewGaugeFunc to under conditional

Signed-off-by: Tim Vaillancourt <tim@timvaillancourt.com>

* Use env

Signed-off-by: Tim Vaillancourt <tim@timvaillancourt.com>

* Remove env from TxThrottler struct

Signed-off-by: Tim Vaillancourt <tim@timvaillancourt.com>

* Fix tests

Signed-off-by: Tim Vaillancourt <tim@timvaillancourt.com>

* PR suggestion

Signed-off-by: Tim Vaillancourt <tim@timvaillancourt.com>

* Fix unit test

Signed-off-by: Tim Vaillancourt <tim@timvaillancourt.com>

* reorder test vars

Signed-off-by: Tim Vaillancourt <tim@timvaillancourt.com>

---------

Signed-off-by: Tim Vaillancourt <tim@timvaillancourt.com>

* Fix go/vt/vttablet/tabletserver/query_engine_test.go

---------

Signed-off-by: Eduardo J. Ortega U <5791035+ejortegau@users.noreply.github.com>
Signed-off-by: Tim Vaillancourt <tim@timvaillancourt.com>
Co-authored-by: Eduardo J. Ortega U <5791035+ejortegau@users.noreply.github.com>

* `slack-vitess-r14.0.5-dsdefense`: set `CODEOWNERS`

* Use a sub-team

… 2 (#69)

* Skip recalculating the rate in MaxReplicationLagModule when it can't be done

This defends against lag records with nil stats which can lead to segfaults.
See vitessio#12619

Signed-off-by: Eduardo J. Ortega U <5791035+ejortegau@users.noreply.github.com>

* Address PR comments.

Signed-off-by: Eduardo J. Ortega U <5791035+ejortegau@users.noreply.github.com>

* Make linter happy

Signed-off-by: Eduardo J. Ortega U <5791035+ejortegau@users.noreply.github.com>

* Add support for criticality query directive, and have TxThrottler respect that

Signed-off-by: Eduardo J. Ortega U <5791035+ejortegau@users.noreply.github.com>

* Remove unused variable

Signed-off-by: Eduardo J. Ortega U <5791035+ejortegau@users.noreply.github.com>

* Fix CI pipeline

Signed-off-by: Eduardo J. Ortega U <5791035+ejortegau@users.noreply.github.com>
Signed-off-by: Tim Vaillancourt <tim@timvaillancourt.com>

* Address PR comments.

Signed-off-by: Eduardo J. Ortega U <5791035+ejortegau@users.noreply.github.com>

* Make linter happy & add extra test cases.

Signed-off-by: Eduardo J. Ortega U <5791035+ejortegau@users.noreply.github.com>

* Address PR comments.

Signed-off-by: Eduardo J. Ortega U <5791035+ejortegau@users.noreply.github.com>

* Fix circular import

Signed-off-by: Eduardo J. Ortega U <5791035+ejortegau@users.noreply.github.com>

* Make linter happy

Signed-off-by: Eduardo J. Ortega U <5791035+ejortegau@users.noreply.github.com>

* Address PR comments:

* Invalid criticality in query directive fails the query.

Signed-off-by: Eduardo J. Ortega U <5791035+ejortegau@users.noreply.github.com>

* Fix executor.go

Signed-off-by: Tim Vaillancourt <tim@timvaillancourt.com>

* Fix go/vt/vtgate/executor.go again

Signed-off-by: Tim Vaillancourt <tim@timvaillancourt.com>

* Fix TestNewMaxReplicationLagModule_recalculateRate

* Fix go/vt/vtgate/executor_test.go

* Regen protos from linux

Signed-off-by: Tim Vaillancourt <tim@timvaillancourt.com>

---------

Signed-off-by: Eduardo J. Ortega U <5791035+ejortegau@users.noreply.github.com>
Signed-off-by: Tim Vaillancourt <tim@timvaillancourt.com>
Co-authored-by: Eduardo J. Ortega U <5791035+ejortegau@users.noreply.github.com>

…ssio#12662 (#72)

…ES (vitessio#12949) (#81)

This error code seems better suited to represent the fact that transactions are
being throttled by the server due to some form of resource contention than the
current code 1203 ER_TOO_MANY_USER_CONNECTIONS.

Signed-off-by: Eduardo J. Ortega U <5791035+ejortegau@users.noreply.github.com>
Co-authored-by: Eduardo J. Ortega U <5791035+ejortegau@users.noreply.github.com>

…itessio#12901 (#83)

* Cleanup panics in `txthrottler`, reorder for readability (vitessio#12901)

* Cleanup tx_throttler.go

Signed-off-by: Tim Vaillancourt <tim@timvaillancourt.com>

* Cleanup tx_throttler.go #2

Signed-off-by: Tim Vaillancourt <tim@timvaillancourt.com>

* Fix throttlerFactoryFunc

Signed-off-by: Tim Vaillancourt <tim@timvaillancourt.com>

* Undo if-cond consolidation

Signed-off-by: Tim Vaillancourt <tim@timvaillancourt.com>

* Undo struct shuffling

Signed-off-by: Tim Vaillancourt <tim@timvaillancourt.com>

* prove that disabled config returns nil error

Signed-off-by: Tim Vaillancourt <tim@timvaillancourt.com>

* Improve test

Signed-off-by: Tim Vaillancourt <tim@timvaillancourt.com>

---------

Signed-off-by: Tim Vaillancourt <tim@timvaillancourt.com>

* remove unused cell string

---------

Signed-off-by: Tim Vaillancourt <tim@timvaillancourt.com>

Signed-off-by: Eduardo J. Ortega U <5791035+ejortegau@users.noreply.github.com>

* Fix transaction throttler ignoring the initial rate

This addresses the issue reported in vitessio#12549

Signed-off-by: Eduardo J. Ortega U <5791035+ejortegau@users.noreply.github.com>

* Add missing override of max replication lag in `throttler.newThrottler()`

Signed-off-by: Eduardo J. Ortega U <5791035+ejortegau@users.noreply.github.com>

* Reorder functions to make diff easier to read

Signed-off-by: Eduardo J. Ortega U <5791035+ejortegau@users.noreply.github.com>

* Fix check for maxRate in `newThrottlerFromConfig()`

Signed-off-by: Eduardo J. Ortega U <5791035+ejortegau@users.noreply.github.com>

* Fix some CI pipeline issues

Signed-off-by: Eduardo J. Ortega U <5791035+ejortegau@users.noreply.github.com>

* Address PR comment.

Signed-off-by: Eduardo J. Ortega U <5791035+ejortegau@users.noreply.github.com>

* Fix typo

Signed-off-by: Eduardo J. Ortega U <5791035+ejortegau@users.noreply.github.com>

---------

Signed-off-by: Eduardo J. Ortega U <5791035+ejortegau@users.noreply.github.com>
Signed-off-by: Eduardo J. Ortega U. <5791035+ejortegau@users.noreply.github.com>

…3040)

* TxThrottler support for transactions outside BEGIN/COMMIT

This change allows the TxThrottler to throttle requests sent outside of
explicit transactions (i.e. explicit BEGIN/COMMIT blocks) when configured to do
so via a new config flag. Otherwise, it preserves the current/default behavior
of only throttling transactions inside BEGIN/COMMIT.

In addition, when this flag is passed, and because the call to throttle is done
in a context in which the execution plan is already known, this change uses the
plan type to make sure that throttling is triggered only when the query being
executed is INSERT/UPDATE/DELETE/LOAD, so that SELECTs and others no longer get
throttled unnecessarily, as they do not contribute to increasing replication
lag, which is what the TxThrottler aims at controlling.

Signed-off-by: Eduardo J. Ortega U <5791035+ejortegau@users.noreply.github.com>

* Fix e2e flag tests & TxThrottler unit test

Signed-off-by: Eduardo J. Ortega U <5791035+ejortegau@users.noreply.github.com>

* Throttle auto-commit statements in QueryExecutor instead of TxPool

This changes where we call the transaction throttler:

1. Statements in `BEGIN/COMMIT` blocks keep being throttled in
   `TabletServer.begin()`.
2. Additionally, throttling is added in QueryExecutor.execAutocommit() and
   `QueryExecutor.execAsTransaction()`.

We also change things so that throttling in this new case is not opt-in via
configuration flag but instead is the new and only behavior.

Finally, we remove some previously added changes to example scripts that had
been added with the intention of testing and are not part of the PR.

Signed-off-by: Eduardo J. Ortega U <5791035+ejortegau@users.noreply.github.com>

* Adds test cases for QueryExecutor.Execute() with TxThrottle throttling

To make unit testing simple here, we separated the interface and implementation
of the TxThrottle, and simply used a mock implementation of the interface in
the tests.

Signed-off-by: Eduardo J. Ortega U <5791035+ejortegau@users.noreply.github.com>

* Add note on new TxThrottler behavior in v17 changelog

Signed-off-by: Eduardo J. Ortega U <5791035+ejortegau@users.noreply.github.com>

* Fix PR number in changelog entry for TxThrottler behavior change.

Signed-off-by: Eduardo J. Ortega U <5791035+ejortegau@users.noreply.github.com>

* Make linter happy

Signed-off-by: Eduardo J. Ortega U <5791035+ejortegau@users.noreply.github.com>

* Address PR comments

Signed-off-by: Eduardo J. Ortega U <5791035+ejortegau@users.noreply.github.com>

---------

Signed-off-by: Eduardo J. Ortega U <5791035+ejortegau@users.noreply.github.com>

Signed-off-by: Eduardo J. Ortega U. <5791035+ejortegau@users.noreply.github.com>

* txthrottler: further code cleanup



* Fix bad merge resolution



---------

Signed-off-by: Tim Vaillancourt <tim@timvaillancourt.com>

…let type (vitessio#12174) (#95)

* Add flag to select tx throttler tablet type (vitessio#12174)

Signed-off-by: Tim Vaillancourt <tim@timvaillancourt.com>

* Remove mistaken git add

Signed-off-by: Tim Vaillancourt <tim@timvaillancourt.com>

---------

Signed-off-by: Tim Vaillancourt <tim@timvaillancourt.com>

This reverts commit 76159fd.

Signed-off-by: Priya Bibra <pbibra@slack-corp.com>
Signed-off-by: 'Priya Bibra' <pbibra@slack-corp.com>

This is a backport of upstreamed vitessio#13526

Signed-off-by: Eduardo J. Ortega U <5791035+ejortegau@users.noreply.github.com>

* BackportAdd dry-run mode to the TxThrottler

This is a backport of upstreamed vitessio#13604

Signed-off-by: Eduardo J. Ortega U <5791035+ejortegau@users.noreply.github.com>

* Cleanup usage of go.rice in favor of go:embed (vitessio#10956)

* Cleanup usage of go.rice in favor of go:embed

The usage of go.rice predates the availability of go:embed, but we
should switch to using go:embed instead to ship specific assets like
config files that we need.

go.rice is also incompatible with Go 1.19 and while it might see a fix
in the future, it seems better to go with the recommended Go approach
that is available these days.

Signed-off-by: Dirkjan Bussink <d.bussink@gmail.com>

* Move vtctld to also use `go embed` instead of go.rice

Signed-off-by: Dirkjan Bussink <d.bussink@gmail.com>

* Remove last rice-box related comments

Signed-off-by: Dirkjan Bussink <d.bussink@gmail.com>

* Remove config moving

This right now breaks building the actual tests since the tests might
also end up loading the regular code which has a `go embed` and refers
to the package with the config embeds.

This doesn't mean that the config isn't properly included in the
binaries. Also with using `go embed` we have a build time dependency on
the files and we always know the latest is included, so we don't have
the issue of potentially outdated files either.

All in all, it seems simplest to remove this logic and trust that Go
itself works as advertised.

Signed-off-by: Dirkjan Bussink <d.bussink@gmail.com>

* fix vtrootbin

Signed-off-by: 'Stanislav Maksimov' <smaksimov@slack-corp.com>

* update the build to 1.19.10

Signed-off-by: 'Stanislav Maksimov' <smaksimov@slack-corp.com>

* update the workflows to 1.19.10

Signed-off-by: 'Stanislav Maksimov' <smaksimov@slack-corp.com>

* update the docker image to 1.19.10

Signed-off-by: 'Stanislav Maksimov' <smaksimov@slack-corp.com>

* update the bootstrap version to get docker to go 1.20.5

Signed-off-by: 'Stanislav Maksimov' <smaksimov@slack-corp.com>

* use 1.18.7 for static checks

Signed-off-by: 'Stanislav Maksimov' <smaksimov@slack-corp.com>

* lower the build version requirement to allow static checks to pass

Signed-off-by: 'Stanislav Maksimov' <smaksimov@slack-corp.com>

* experiment with using old and new Go for a single workflow

Signed-off-by: 'Stanislav Maksimov' <smaksimov@slack-corp.com>

* use old and new Go for a upgrade/downgrade workflows

Signed-off-by: 'Stanislav Maksimov' <smaksimov@slack-corp.com>

* set -buildvcs=false

Signed-off-by: 'Stanislav Maksimov' <smaksimov@slack-corp.com>

* address build errors

Signed-off-by: 'Stanislav Maksimov' <smaksimov@slack-corp.com>

* Revert "fix parameter name (#93)" (#100)

This reverts commit 76159fd.

* apply patch 12178 to v14 (#102)

Signed-off-by: Priya Bibra <pbibra@slack-corp.com>
Signed-off-by: 'Priya Bibra' <pbibra@slack-corp.com>

* more workflows to use self-hosted runner

* even more workflows to use self-hosted runner

* partially switch upgrade-downgrade to self-hosted runner

* Ejortegau/larger runners (#115)

* Empty commit to trigger CI

Signed-off-by: Eduardo J. Ortega U <5791035+ejortegau@users.noreply.github.com>

* `slack-vitess-r14.0.5-dsdefense`: use larger runner

Signed-off-by: Tim Vaillancourt <tim@timvaillancourt.com>

* Use runner group instead

Signed-off-by: Tim Vaillancourt <tim@timvaillancourt.com>

* Rename group

Signed-off-by: Tim Vaillancourt <tim@timvaillancourt.com>

* Move more jobs to runner group

Signed-off-by: Tim Vaillancourt <tim@timvaillancourt.com>

* use vitess-ubuntu20 runner group

Signed-off-by: Tim Vaillancourt <tim@timvaillancourt.com>

* Rever change of runner type for e2e ERS PRS new features heavy test

Signed-off-by: Eduardo J. Ortega U <5791035+ejortegau@users.noreply.github.com>

---------

Signed-off-by: Eduardo J. Ortega U <5791035+ejortegau@users.noreply.github.com>
Signed-off-by: Tim Vaillancourt <tim@timvaillancourt.com>
Co-authored-by: Tim Vaillancourt <tim@timvaillancourt.com>

* Revert change of runner type for shardedrecovery_stress_verticalsplit_heavy. (#116)

We do this because the test is taking a lot longer & failing in some cases with
the larger runner.

Signed-off-by: Eduardo J. Ortega U <5791035+ejortegau@users.noreply.github.com>

* `slack-vitess-r14.0.5`: use dedicated larger runner (#113)

* `slack-vitess-r14.0.5`: use dedicated larger runner

Signed-off-by: Tim Vaillancourt <tim@timvaillancourt.com>

* fix fileNameFromPosition

Signed-off-by: Tim Vaillancourt <tim@timvaillancourt.com>

* empty commit

Signed-off-by: Tim Vaillancourt <tim@timvaillancourt.com>

* empty commit

Signed-off-by: Tim Vaillancourt <tim@timvaillancourt.com>

---------

Signed-off-by: Tim Vaillancourt <tim@timvaillancourt.com>

* `slack-vitess-r14.0.5`: allow conn overrides in consul topo (#111)

* `slack-vitess-r14.0.5`: allow conn overrides in consul topo

Signed-off-by: Tim Vaillancourt <tim@timvaillancourt.com>

* fix e2e test

Signed-off-by: Tim Vaillancourt <tim@timvaillancourt.com>

---------

Signed-off-by: Tim Vaillancourt <tim@timvaillancourt.com>

---------

Signed-off-by: Dirkjan Bussink <d.bussink@gmail.com>
Signed-off-by: 'Stanislav Maksimov' <smaksimov@slack-corp.com>
Signed-off-by: Priya Bibra <pbibra@slack-corp.com>
Signed-off-by: 'Priya Bibra' <pbibra@slack-corp.com>
Signed-off-by: Eduardo J. Ortega U <5791035+ejortegau@users.noreply.github.com>
Signed-off-by: Tim Vaillancourt <tim@timvaillancourt.com>
Co-authored-by: Dirkjan Bussink <d.bussink@gmail.com>
Co-authored-by: Roderick Yao <roderick.yao@slack-corp.com>
Co-authored-by: pbibra <pbibra@slack-corp.com>
Co-authored-by: Eduardo J. Ortega U <5791035+ejortegau@users.noreply.github.com>
Co-authored-by: Tim Vaillancourt <tim@timvaillancourt.com>

…test + compressors (#119) (#124)

* Delete all legacy sharding related code (vitessio#10278)

* Delete all legacy sharding related code



* Move used until functions from initialsharding to cluster



* Remove vtctl commands



* Kill vtworker and SetKeyspaceServedFrom cmd



* WaitForDrain related stragglers



* Legacy local straggler workflow



* Get rid of SetKeyspaceShardingInfo & wait for drain stragglers



* Remove vtworker stragglers



* Update throttlerservice protobuf



* Rename test 24, add hashicorp vault test to it (now mysql_server_vault)



* Remove last mentiones of legacy sharding in vtctl



* remove binlog_use_v3_resharding_mode



* Address review comments



* Address review comments



* Correct vtgate help output



* go fmt



* Remove v2 resharding fields (vitessio#10409)

* cleanup: remove sharding_column_name and sharding_column_type



* cleanup: remove sharding_column_name and sharding_column_type



* cleanup: remove sharding_column_name and sharding_column_type



* cleanup: remove sharding_column_name and sharding_column_type



* generate vtadmin files



* cleanup: remove sharding_column_name and sharding_column_type from vtadmin



* Merge from main



* Fix bad merge conflict resolution



* Fix missing 'sharding' import



* Fix bad conflict resolution in go/test/endtoend/cellalias/cell_alias_test.go



* Backup/Restore: add support for external compressors and decompressors (vitessio#10558)

* change to support an external decompressor




* add external compressor support + builtin additional compressors




* wrap external compressor/decompressor




* go mod tidy + comments




* add copyright notices




* add support for builtin engine




* Adding test case for buckup compression



* Fixing unit test and run mod tidy



* Removing unwanted unit tests



* Increase timeout of backup tests



* fixing linter errors



* Change test logic to accomodate running selective tests



* removing lint warning



* fixing test failure



* Removing un-necessary test



* Fixing code review feeback



* Change builtinEngine to consider 'auto' decompressor



* fixing Upgrade/Downgrade test



* Fix type & add summary under release notes



* Fixing typos in summary



* Fixing flag name typos






* Add MySQL 8 Support to Backup Tests (vitessio#10691)

* Add support for MySQL 8.0 in backup tests



* Add 8.0 workflow



* whitespace



* Use vtctldclient SetKeyspaceDurabilityPolicy to manage semi-sync

This needed to be done after the shard was setup in order to satisfy
the semantic assumptions related to semi-sync in the tests.



* Remove extraneous changes



* We need lz4 for TestXtrabackupStreamWithlz4Compression



* Try using Percona Repo for MySQL 8 to align mysqld and xtrabackup versions



* Specify stream type everywhere



* Remove repeated server install



* Moar...



* Move vtctlbackup test to 8.0



* Rename vtbackup test and move to MySQL 8



* Split the xbstream tests so the workflow doesn't time out

Otherwise it was going over the 10min limit and getting
killed.



* Use MySQL 8 compat method for setting passwords



* Test increasing timeout at another level



* Don't use the init passwords file with 8.0

mysqlctl doesn't start...

This is likely due to the change in initialization behavior with
MySQL 8.0 as it goes though two phases and you can't simply
start up mysqld and pass it data, it has to initialize and restart
first.



* Fix incorrect password update statement for vt_repl user



* Bump timeouts for 8.0 backup tests



* Bump it more :(



* Increase backup/restore timeout in backup_utils



* Apply new 8.0 template everywhere



* Fix bugs around how the compression flags were getting passed



* Use 45m timeout for the workflow, 30m for the run.



* These changes were no longer needed so limiting diff.



* Explicitly skip new linter check





* Fix test file merge issues



* Go 1.18.7 to fix error



* Fix lint



* Fix vttablet.txt



* Remove sharding_column_name and sharding_column_type from vtctld2 (vitessio#10459)

* Remove sharding_column_name and sharding_column_type



* Run make web_build to compile production files



* Remove vars from test



* Remove sharding column type select box test from web test



---------

Signed-off-by: Matt Lord <mattalord@gmail.com>
Signed-off-by: Tim Vaillancourt <tim@timvaillancourt.com>
Signed-off-by: Arvind Murty <arvind.murty@gmail.com>
Signed-off-by: notfelineit <notfelineit@gmail.com>
Co-authored-by: Matt Lord <mattalord@gmail.com>
Co-authored-by: Arvind Murty <arvind.murty@gmail.com>
Co-authored-by: Rameez Sajwani <rameezwazirali@hotmail.com>
Co-authored-by: Renan Rangel <rrangel@slack-corp.com>
Co-authored-by: Renan Rangel <renan@slack-corp.com>
Co-authored-by: Rohit Nayak <rohit@planetscale.com>
Co-authored-by: Frances Thai <31225471+notfelineit@users.noreply.github.com>

* Switch to `pflag` for all parsing

This transparently swaps the cli parsing library used by `internal/flag`
from the standard library `flag` package to `spf13/pflag`.

It also introduces hook points for packages throughout the vitess codebase
to register their flags for either all commands using `servenv` or a
particular subset of commands. This allows these packages to continue to
define their flag variables in a package-private way, but without
polluting the global flagset.



* Workaround exit code difference between stdlib `flag` and `pflag`

tl;dr stdlib `flag` has [this][1] and `pflag` does not

[1]: golang/go@dcf0929



* adjust test data for difference in spacing between pflag/stdflag



* update lingering legacy flag tests



* Update vtgate/tabletgateway.go to use new interface to isolate flags, update test data



* update flags in java test code

Signed-off-by: Andrew Mason <andrew@planetscale.com>
Co-authored-by: Andrew Mason <andrew@planetscale.com>