quota: skip usage records registering the period a volume has been attached

[winterhazel]

Description

This is a follow-up of #11531 and #13909.

With #11531, the Usage server can now create up to 2 usage records for a single volume for the same period; one registers the time the volume remained allocated, while the other the time it remained attached to an instance. This results in a duplicate Quota value calculation for the volume.

For now, skip the Quota calculation for the volume usage records associating it to an instance.

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

Bug Severity

• BLOCKER
• Critical
• Major
• Minor
• Trivial

Screenshots (if appropriate):

How Has This Been Tested?

1. I enabled Quota and configured a volume tariff.
2. I created 2 volumes.
3. I attached only 1 of the volumes to an instance.
4. I ran the Usage job.
5. I verified that both the attached volume and the volume that was not attached had the same Quota consumption.

[winterhazel]

@blueorangutan package

[blueorangutan]

@winterhazel 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.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 19.65%. Comparing base (4bfeb96) to head (ffad096).

Additional details and impacted files

@@             Coverage Diff              @@
##               main   #13936      +/-   ##
============================================
- Coverage     19.65%   19.65%   -0.01%     
+ Complexity    19803    19801       -2     
============================================
  Files          6368     6368              
  Lines        574935   574939       +4     
  Branches      70358    70359       +1     
============================================
- Hits         113026   113012      -14     
- Misses       449632   449652      +20     
+ Partials      12277    12275       -2     

Flag	Coverage Δ
uitests	3.41% <ø> (ø)
unittests	20.93% <100.00%> (-0.01%)	⬇️

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[blueorangutan]

Packaging result [SF]: ✔️ el8 ✔️ el9 ✔️ el10 ✔️ debian ✔️ suse15. SL-JID 18930

[winterhazel]

I don't think the smoke tests are going to have much value here. This change is isolated to the Quota plugin, and no Marvin test covers the Quota processing.

[JoaoJandre]

Code LGTM