K8s informer to work with specific namespaces for logger

[shubham-bansal96]

Description

Which issue(s) this PR fixes:

Fixes #

Testing

Checklist:

• I ran tests as well as code linting locally to verify my changes.
• I have done manual verification of my changes, changes working as expected.
• I have added new tests to cover my changes.
• My changes follow contributing guidelines of Fission.
• I have signed all of my commits.

[codecov]

Codecov Report

Merging #2647 (7a70792) into main (526b5f0) will decrease coverage by 0.05%.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##             main    #2647      +/-   ##
==========================================
- Coverage   19.76%   19.70%   -0.06%     
==========================================
  Files          63       63              
  Lines        7179     7200      +21     
==========================================
  Hits         1419     1419              
- Misses       5656     5677      +21     
  Partials      104      104              

Flag	Coverage Δ
unittests	19.70% <0.00%> (-0.06%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
pkg/utils/informer.go	0.00% <0.00%> (ø)

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