[COST-4953] Specify operating system for testing purposes.

[bacciotti]

This update will improve the Nise populator to retrieve the operating system information from a YAML file. If the operating system field in the YAML is empty, the script will automatically select a random operating system option.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 93.7%. Comparing base (3ab9130) to head (3d82715).

❗ Current head 3d82715 differs from pull request most recent head c3eb090

Please upload reports for the commit c3eb090 to get more accurate results.

Additional details and impacted files

@@           Coverage Diff           @@
##            main    #507     +/-   ##
=======================================
- Coverage   93.7%   93.7%   -0.0%     
=======================================
  Files         62      62             
  Lines       4680    4677      -3     
  Branches     658     658             
=======================================
- Hits        4386    4383      -3     
  Misses       154     154             
  Partials     140     140