operator/pkg/tasks/deinit: unit test kubeconfig

[mohamedawnallah]

Description

In this commit, we unit test kubeconfig deinit task in the operator package on cleaning up the secret if it has the given labels.

What type of PR is this?

Which issue(s) this PR fixes:
Part of #5491.

Does this PR introduce a user-facing change?:

NONE

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Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 36.71%. Comparing base (c16e52a) to head (cbeb308).
Report is 22 commits behind head on master.

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Additional details and impacted files

@@            Coverage Diff             @@
##           master    #5676      +/-   ##
==========================================
+ Coverage   35.85%   36.71%   +0.86%     
==========================================
  Files         647      648       +1     
  Lines       45070    45079       +9     
==========================================
+ Hits        16158    16551     +393     
+ Misses      27664    27281     -383     
+ Partials     1248     1247       -1     

Flag	Coverage Δ
unittests	36.71% <ø> (+0.86%)	⬆️

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[XiShanYongYe-Chang]

Thank~
/lgtm
/approve

[karmada-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: XiShanYongYe-Chang

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