Add more details to VM deployment failure alert messages

[GaOrtiga]

Description

This PR improves the details provided in the logs and in the alert email sent when a VM fails to deploy.

Types of changes

• Breaking change (fix or feature that would cause existing functionality to change)
• New feature (non-breaking change which adds functionality)
• Bug fix (non-breaking change which fixes an issue)
• Enhancement (improves an existing feature and functionality)
• Cleanup (Code refactoring and cleanup, that may add test cases)
• Build/CI
• Test (unit or integration test code)

Feature/Enhancement Scale or Bug Severity

Feature/Enhancement Scale

• Major
• Minor

[sureshanaparti]

@blueorangutan package

[blueorangutan]

@sureshanaparti a [SL] Jenkins job has been kicked to build packages. It will be bundled with no SystemVM templates. I'll keep you posted as I make progress.

[Copilot]

Pull request overview

This PR enhances VM deployment failure diagnostics by improving the log lines and the alert email content generated when VM creation fails, aiming to make troubleshooting easier.

Changes:

• Refines log messages during failed VM deployment cleanup (VM/volume destruction path).
• Updates the VM deployment failure alert to use a dedicated subject/body and include a log context id reference.

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 3.52%. Comparing base (5d61ba3) to head (b7216bf).
⚠️ Report is 1 commits behind head on main.

❗ There is a different number of reports uploaded between BASE (5d61ba3) and HEAD (b7216bf). Click for more details.

HEAD has 1 upload less than BASE

Flag	BASE (5d61ba3)	HEAD (b7216bf)
unittests	1	0

Additional details and impacted files

@@              Coverage Diff              @@
##               main   #12939       +/-   ##
=============================================
- Coverage     18.02%    3.52%   -14.50%     
=============================================
  Files          5973      464     -5509     
  Lines        537466    40063   -497403     
  Branches      65991     7534    -58457     
=============================================
- Hits          96855     1414    -95441     
+ Misses       429689    38461   -391228     
+ Partials      10922      188    -10734     

Flag	Coverage Δ
uitests	3.52% <ø> (ø)
unittests	?

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[blueorangutan]

Packaging result [SF]: ✔️ el8 ✔️ el9 ✔️ el10 ✔️ debian ✔️ suse15. SL-JID 17321