Allow people to use KUBECONFIG env var and multiple config files #4816

[vrubezhny]

Fixes #4816

[codecov]

Codecov Report

Attention: Patch coverage is 45.45455% with 240 lines in your changes missing coverage. Please review.

Project coverage is 44.79%. Comparing base (da60441) to head (cad5d26).
Report is 1010 commits behind head on main.

Files with missing lines	Patch %	Lines
src/util/kubeUtils.ts	57.33%	93 Missing ⚠️
src/openshift/cluster.ts	23.25%	66 Missing ⚠️
src/oc/ocWrapper.ts	36.66%	57 Missing ⚠️
src/explorer.ts	31.25%	22 Missing ⚠️
src/openshift/project.ts	33.33%	2 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##             main    #5005       +/-   ##
===========================================
+ Coverage   32.37%   44.79%   +12.41%     
===========================================
  Files          85       99       +14     
  Lines        6505     8399     +1894     
  Branches     1349     1786      +437     
===========================================
+ Hits         2106     3762     +1656     
- Misses       4399     4637      +238     

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[datho7561]

Works well for me when I have kind and minikube set up in different config files. Not sure when the greyed out icon is used, but other than that the code looks reasonable. Thanks, Victor!

[datho7561]

When is this used?

[vrubezhny]

When displaying a list of available clusters in Login QuickPick the current active cluster we're logged in is shown with a "red" colored icon, while the others are ahown with a "grey" icon:

Note: we actually might be logged in to more than one cluster at the same time, the "red"-icon will be used only for the cluster, that is referenced in the "current-context", so other clusters we might be logged in too will still be shown with a "grey" icon.
The "current" cluster is always displayed at the top of the list.