feature: add "known working" k8s version matrix to documentation

[qdzlug]

Is your feature request related to a problem? Please describe.
See #182 for some of the issues we are seeing with updates to Kubernetes. We need to do a better job of surfacing this information and working version testing into our test process.

Describe the solution you'd like
Updates to documentation, streamlining of version management code.

Describe alternatives you've considered
None.

Additional context
None.