K8 endpoint updates

[mamclaughlin]

Description

Adds support for deleting kubernetes cluster with linked resources and getting supported kubernetes versions

Related Issues

Checklist:

• Have you checked to ensure there aren't other open Pull Requests for the same update/change?
• Have you linted your code locally prior to submission?
• Have you successfully ran tests with your changes locally?

[codecov]

Codecov Report

Merging #159 (ddeb96e) into master (4f823ff) will increase coverage by 0.10%.
The diff coverage is 71.42%.

@@            Coverage Diff             @@
##           master     #159      +/-   ##
==========================================
+ Coverage   60.37%   60.47%   +0.10%     
==========================================
  Files          24       24              
  Lines        1451     1465      +14     
==========================================
+ Hits          876      886      +10     
- Misses        295      297       +2     
- Partials      280      282       +2     

Impacted Files	Coverage Δ
kubernetes.go	69.64% <71.42%> (+0.25%)	⬆️

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