fix(tests): use regexes for better exclusions

[Molter73]

Description

The images we use from RHCOS may change from underneatch our feet, so we use regexes to exclude broader patterns that we know won't work with fact.

Checklist

• Patch has a change log entry OR does not need one.
• Investigated and inspected CI test results
• Updated documentation accordingly

Automated testing

• Added unit tests
• Added integration tests
• Added regression tests

If any of these don't apply, please comment below.

Testing Performed

• Verify all expected RHCOS VMs run the tests
• Update collector ref to master before merging.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch mauro/fix/exclude-broken-vms

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[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 32.72%. Comparing base (0480c62) to head (781c781).
⚠️ Report is 5 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #925   +/-   ##
=======================================
  Coverage   32.72%   32.72%           
=======================================
  Files          21       21           
  Lines        2695     2695           
  Branches     2695     2695           
=======================================
  Hits          882      882           
  Misses       1810     1810           
  Partials        3        3           

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