[14.2.X]Fix for importing ClassesDefXmlUtils

[smuzaffar]

backport of #46919
This should fix the patch build errors like

>> Checking EDM Class Version for src/AnalysisDataFormats/SUSYBSMObjects/src/classes_def.xml in libAnalysisDataFormatsSUSYBSMObjects.so
/data/cmsbld/jenkins/workspace/build-any-ib/w/el8_amd64_gcc12/cms/cmssw/CMSSW_14_2_X_2024-12-08-0000/src/FWCore/Reflection/scripts/edmCheckClassVersion -l libAnalysisDataFormatsSUSYBSMObjects.so -x /data/cmsbld/jenkins/workspace/build-any-ib/w/tmp/BUILDROOT/51a12ecc6fa5b95709134408c954413b/opt/cmssw/el8_amd64_gcc12/cms/cmssw-patch/CMSSW_14_2_X_2024-12-11-2300/src/AnalysisDataFormats/SUSYBSMObjects/src/classes_def.xml
Traceback (most recent call last):
  File "/data/cmsbld/jenkins/workspace/build-any-ib/w/el8_amd64_gcc12/cms/cmssw/CMSSW_14_2_X_2024-12-08-0000/src/FWCore/Reflection/scripts/edmCheckClassVersion", line 4, in <module>
    import FWCore.Reflection.ClassesDefXmlUtils as ClassesDefUtils
ModuleNotFoundError: No module named 'FWCore.Reflection.ClassesDefXmlUtils'

[cmsbuild]

A new Pull Request was created by @smuzaffar for CMSSW_14_2_X.

It involves the following packages:

• FWCore/Reflection (core)

@Dr15Jones, @cmsbuild, @makortel, @smuzaffar can you please review it and eventually sign? Thanks.
@makortel, @missirol, @wddgit this is something you requested to watch as well.
@antoniovilela, @mandrenguyen, @rappoccio, @sextonkennedy you are the release manager for this.

cms-bot commands are listed here

• Backported from Fix for importing ClassesDefXmlUtils #46919

[cmsbuild]

cms-bot internal usage

[smuzaffar]

test parameters:

• addpkg = DataFormats/Common

[smuzaffar]

please test

[cmsbuild]

+1

Size: This PR adds an extra 16KB to repository
Summary: https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-19ac33/43401/summary.html
COMMIT: fcb4a5b
CMSSW: CMSSW_14_2_X_2024-12-11-2300/el8_amd64_gcc12
User test area: For local testing, you can use /cvmfs/cms-ci.cern.ch/week1/cms-sw/cmssw/46921/43401/install.sh to create a dev area with all the needed externals and cmssw changes.

Comparison Summary

Summary:

• No significant changes to the logs found
• Reco comparison results: 8 differences found in the comparisons
• DQMHistoTests: Total files compared: 46
• DQMHistoTests: Total histograms compared: 3483722
• DQMHistoTests: Total failures: 486
• DQMHistoTests: Total nulls: 0
• DQMHistoTests: Total successes: 3483216
• DQMHistoTests: Total skipped: 20
• DQMHistoTests: Total Missing objects: 0
• DQMHistoSizes: Histogram memory added: 0.0 KiB( 45 files compared)
• Checked 202 log files, 172 edm output root files, 46 DQM output files
• TriggerResults: found differences in 1 / 44 workflows

[makortel]

+core

[makortel]

Comparison differences are related to #46416

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next CMSSW_14_2_X IBs (tests are also fine) and once validation in the development release cycle CMSSW_15_0_X is complete. This pull request will now be reviewed by the release team before it's merged. @sextonkennedy, @rappoccio, @mandrenguyen, @antoniovilela (and backports should be raised in the release meeting by the corresponding L2)

[mandrenguyen]

+1