Mreeve 461 post install

[mreeve-snl]

🗣 Description

This adds features to run the post install script and adds in documentation as well.

Features/Fixes:

• Remove optional password setting and add in small changes to Readme.MD
  

• Updates and general fixes across docs
  

• creates post-install.yml: 
  

  1. setting up fleet
  2. fixing a few issues with wazuh (in a future release this won't be necessary)
  3. setting up custom LME dashboards
  4. setting up wazuh's dashboards
  5. setting up a read only user for analysts to connect and query LME's data

• Fixing passwords in init-setup
  

• adding starting dashboards docs + scripting
  

• Remove memory limitations in kibana/elasticsearch quadlets
  

💭 Motivation and context

closes #461
closes #443
We need something to run post-install steps to finalize setup of LME containers/services.

🧪 Testing

tested post-install.yml on a clean box, also the pipeline will test to see if things break

will do a test of all steps on a clean box before merge

✅ Pre-approval checklist

• There is a gitIssue that this PR resolves
• Git Issue that this PR solves has been selected in the Development section
• The PR's base branch has been modified to be the proper branch.
• Changes are limited to a single goal AND
  the title reflects this in a clear human readable format
• Issue that this PR solves has been selected in the Development section
• I have read and agree to LME's CONTRIBUTING.md document.
• The PR adheres to LME's requirements in RELEASES.md
• These code changes follow cisagov code standards.
• All relevant repo and/or project documentation has been updated to reflect the changes in this PR.

✅ Pre-merge Checklist

• All tests pass.
• PR has been tested and the documentation for testing is above.
• Squash and merge all commits into one PR level commit.

✅ Post-merge Checklist

• Delete the branch to keep down number of branches.
• The PR is labeled with feat for an added new feature, update for an update, OR fix for a fix.
• The PR contains Resolves #<issue #> so that merging it closes out the corresponding issue. For example Resolves #132.

[cbaxley]

We won't have them install the old dashboards. We have an importer in the upgrade steps that renames them and imports them.

[mreeve-snl]

Passed linux tests,
running on cluster, then merging: https://github.com/cisagov/LME/actions/runs/11465538956

[mreeve-snl]

https://github.com/cisagov/LME/actions/runs/11465538956

cluster test passed

[cbaxley]

We won't have them install the old dashboards. We have an importer in the upgrade steps that renames them and imports them.

This is fine. :)

[mreeve-snl]

testing post install on a new machine, since thats not in the tests then merging

[mreeve-snl]

OK this is good to merge whenever :) I'll merge this tomorrow if I don't see it merged then