Add pod perf checks for multiple namespaces

[vepatel]

Proposed changes

Adds pod performance metrics for when multiple-namespace feature is active
Sample Output:

pytest command:
pytest -v -s -m multi_ns --ns-count=<anything>0> --replicas=<anything>0>

Checklist

Before creating a PR, run through this checklist and mark each as complete.

• I have read the CONTRIBUTING doc
• I have added tests that prove my fix is effective or that my feature works
• I have checked that all unit tests pass after adding my changes
• I have updated necessary documentation
• I have rebased my branch onto main
• I will ensure my PR is targeting the main branch and pulling from my branch from my own fork

[codecov-commenter]

Codecov Report

Merging #2934 (5abb731) into main (fafa6ba) will decrease coverage by 0.01%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main    #2934      +/-   ##
==========================================
- Coverage   52.30%   52.28%   -0.02%     
==========================================
  Files          58       58              
  Lines       15965    15965              
==========================================
- Hits         8350     8348       -2     
- Misses       7335     7337       +2     
  Partials      280      280              

Impacted Files	Coverage Δ
...ternal/k8s/appprotect/app_protect_configuration.go	86.16% <0.00%> (-0.58%)	⬇️

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