chore(k8s): drop github.com/kubernetes-client/go-base dependency

[jtherin]

issues:

• current lib github.com/kubernetes-client/go-base is not maintained anymore (structs are not uptodate).

• importing github.com/kubernetes/client-go is too heavy (go.mod).

migrate to an internal package with an updated struct.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 69.41%. Comparing base (5bf53e0) to head (a46bdde).
Report is 216 commits behind head on master.

❗ There is a different number of reports uploaded between BASE (5bf53e0) and HEAD (a46bdde). Click for more details.

HEAD has 1 upload less than BASE

Flag	BASE (5bf53e0)	HEAD (a46bdde)
	2	1

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #4078      +/-   ##
==========================================
- Coverage   75.45%   69.41%   -6.05%     
==========================================
  Files         202      292      +90     
  Lines       44323    55670   +11347     
==========================================
+ Hits        33444    38642    +5198     
- Misses       9653    15449    +5796     
- Partials     1226     1579     +353     

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