Proposal: set up load tests

[Cryptophobia]

From @arschles on June 3, 2016 17:50

This issue is for running the router in a Kubernetes cluster and running load tests against it (using a tool like Apache Bench or boom).

Responses other than the expected would be considered failures, but the tests should ideally cover failure scenarios also (i.e. expecting a timeout, etc...)

Additionally, similar load tests should be set up on an entire Deis Workflow cluster. That work may be tracked in a different issue if it's too out of scope from this one.

Copied from original issue: deis/router#198