[SCRAM] Allow conditional dependency

[smuzaffar]

SCRAM needs to support conditional dependencies e.g. add dependency on one set of cmssw packages when alpaka backend is cuda. Now scram allows to add <use name="Foo/Bar" when="alpaka-cuda"/>

[smuzaffar]

please test

[cmsbuild]

A new Pull Request was created by @smuzaffar (Malik Shahzad Muzaffar) for branch IB/CMSSW_12_4_X/master.

@smuzaffar, @aandvalenzuela, @iarspider can you please review it and eventually sign? Thanks.
@perrotta, @dpiparo, @qliphy you are the release manager for this.
cms-bot commands are listed here

[cmsbuild]

-1

Failed Tests: UnitTests
Summary: https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-1c0a83/24710/summary.html
COMMIT: 8176023
CMSSW: CMSSW_12_4_X_2022-05-13-1100/slc7_amd64_gcc10
User test area: For local testing, you can use /cvmfs/cms-ci.cern.ch/week0/cms-sw/cmsdist/7866/24710/install.sh to create a dev area with all the needed externals and cmssw changes.

Unit Tests

I found errors in the following unit tests:

---> test SiStripDAQ_O2O_test had ERRORS
---> test RandomIntProducer_t had ERRORS

Comparison Summary

Summary:

• No significant changes to the logs found
• ROOTFileChecks: Some differences in event products or their sizes found
• Reco comparison results: 455 differences found in the comparisons
• DQMHistoTests: Total files compared: 49
• DQMHistoTests: Total histograms compared: 3697377
• DQMHistoTests: Total failures: 44
• DQMHistoTests: Total nulls: 0
• DQMHistoTests: Total successes: 3697311
• DQMHistoTests: Total skipped: 22
• DQMHistoTests: Total Missing objects: 0
• DQMHistoSizes: Histogram memory added: 0.0 KiB( 48 files compared)
• Checked 206 log files, 45 edm output root files, 49 DQM output files
• TriggerResults: no differences found