Fix: Helm Release fails with "the server could not find the requested resource"

[EronWright]

Proposed changes

Kudos to @cbley-da for identifying the root cause and to @pdf for suggesting a fix, here!

This PR fixes an intermittent problem that resembles:

 kubernetes:helm.sh/v3:Release (mongodb):
    error: 1 error occurred:
    	* Helm release "mongodb/mongodb-456643ba" failed to initialize completely. Use Helm CLI to investigate.: failed to become available within allocated timeout. Error: 
          Helm Release mongodb/mongodb-456643ba: release mongodb-456643ba failed, and has been rolled back due to atomic being set: 
          failed to create resource: the server could not find the requested resource

The problem was that a Go struct (containing a client-go rest config) was being shared and mutated by numerous independent routines. The solution was to copy the struct.

Related issues (optional)

Closes #2481

[codecov]

Codecov Report

Attention: 5 lines in your changes are missing coverage. Please review.

Comparison is base (d90d153) 18.62% compared to head (0e0fbe8) 18.41%.

Files	Patch %	Lines
provider/pkg/provider/kubeconfig.go	0.00%	5 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2677      +/-   ##
==========================================
- Coverage   18.62%   18.41%   -0.22%     
==========================================
  Files          47       47              
  Lines        9587     9589       +2     
==========================================
- Hits         1786     1766      -20     
- Misses       7697     7724      +27     
+ Partials      104       99       -5     

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[github-actions]

Does the PR have any schema changes?

Looking good! No breaking changes found.
No new resources/functions.

[rquitales]

LGTM. Thanks!