Add source_only flag for source-only dependencies in alignment

[guitargeek]

PR description:

Add source_only flag for source-only dependencies in alignment. These dependencies were automatically found with this script.

if this PR is a backport please specify the original PR and why you need to backport that PR:

No backport intended.

[cmsbuild]

+code-checks

Logs: https://cmssdt.cern.ch/SDT/code-checks/cms-sw-PR-33729/22664

• This PR adds an extra 24KB to repository

[cmsbuild]

A new Pull Request was created by @guitargeek (Jonas Rembser) for master.

It involves the following packages:

Alignment/APEEstimation
Alignment/CommonAlignment
Alignment/CommonAlignmentAlgorithm
Alignment/CommonAlignmentMonitor
Alignment/CommonAlignmentProducer
Alignment/LaserAlignmentSimulation
Alignment/MillePedeAlignmentAlgorithm
Alignment/MuonAlignmentAlgorithms
Alignment/OfflineValidation
Alignment/ReferenceTrajectories
Alignment/TrackerAlignment

@malbouis, @yuanchao, @cmsbuild, @tlampen, @pohsun, @francescobrivio can you please review it and eventually sign? Thanks.
@pakhotin, @adewit, @abbiendi, @jhgoh, @tocheng, @tlampen, @mmusich, @trocino this is something you requested to watch as well.
@silviodonato, @dpiparo, @qliphy you are the release manager for this.

cms-bot commands are listed here

[tlampen]

@cmsbuild please test

[cmsbuild]

+1

Summary: https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-1d268e/15094/summary.html
COMMIT: 1ed96ac
CMSSW: CMSSW_12_0_X_2021-05-13-2300/slc7_amd64_gcc900
User test area: For local testing, you can use /cvmfs/cms-ci.cern.ch/week0/cms-sw/cmssw/33729/15094/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: 7 differences found in the comparisons
• DQMHistoTests: Total files compared: 37
• DQMHistoTests: Total histograms compared: 2648242
• DQMHistoTests: Total failures: 12
• DQMHistoTests: Total nulls: 1
• DQMHistoTests: Total successes: 2648207
• DQMHistoTests: Total skipped: 22
• DQMHistoTests: Total Missing objects: 0
• DQMHistoSizes: Histogram memory added: 0.004 KiB( 36 files compared)
• DQMHistoSizes: changed ( 312.0 ): 0.004 KiB MessageLogger/Warnings
• Checked 155 log files, 37 edm output root files, 37 DQM output files
• TriggerResults: no differences found

[yuanchao]

+1

• Add source_only flag for alignment. (only buildfile modified)
• WF matrix tests and unit tests all passed

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next master IBs (tests are also fine). This pull request will now be reviewed by the release team before it's merged. @silviodonato, @dpiparo, @qliphy (and backports should be raised in the release meeting by the corresponding L2)

[qliphy]

+1