Expand mgmt configmap tests

[pdabelf5]

Proposed changes

Add further tests to validate parameters passed to the mgmt configmap

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]

Codecov Report

Attention: Patch coverage is 72.72727% with 9 lines in your changes missing coverage. Please review.

Project coverage is 52.73%. Comparing base (90c2e8a) to head (d0f1f9c).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
internal/configs/configmaps.go	40.00%	4 Missing and 2 partials ⚠️
internal/validation/validation.go	86.36%	2 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #6987      +/-   ##
==========================================
+ Coverage   52.55%   52.73%   +0.17%     
==========================================
  Files          88       89       +1     
  Lines       20803    20824      +21     
==========================================
+ Hits        10933    10981      +48     
+ Misses       9415     9389      -26     
+ Partials      455      454       -1     

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