[123X backport] Simulation: Add Flat0To200_OOTPoisson PU scenario

[fabiocos]

PR description:

This PR adds a luminosity scenario with flat probability of PU between 0 and 200 PU events. For possible use for luminosity studies for Phase-2. Backport of #38419 .

PR validation:

See #38419 .

[cmsbuild]

A new Pull Request was created by @fabiocos (Fabio Cossutti) for CMSSW_12_3_X.

It involves the following packages:

• Configuration/StandardSequences (operations)
• SimGeneral/MixingModule (simulation)

@perrotta, @civanch, @mdhildreth, @cmsbuild, @qliphy, @fabiocos, @davidlange6 can you please review it and eventually sign? Thanks.
@makortel, @felicepantaleo, @GiacomoSguazzoni, @JanFSchulte, @rovere, @VinInn, @Martin-Grunewald, @missirol, @lecriste, @mtosi, @ebrondol, @mmusich, @dgulhan, @slomeo this is something you requested to watch as well.
@perrotta, @dpiparo, @qliphy you are the release manager for this.

cms-bot commands are listed here

[fabiocos]

please test

master version #38419 has just been merged

[fabiocos]

@cms-sw/upgrade-l2 FYI

[cmsbuild]

+1

Summary: https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-beeb84/25665/summary.html
COMMIT: 50739de
CMSSW: CMSSW_12_3_X_2022-06-21-1100/slc7_amd64_gcc10
User test area: For local testing, you can use /cvmfs/cms-ci.cern.ch/week0/cms-sw/cmssw/38420/25665/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: 2 differences found in the comparisons
• DQMHistoTests: Total files compared: 49
• DQMHistoTests: Total histograms compared: 3630290
• DQMHistoTests: Total failures: 8
• DQMHistoTests: Total nulls: 0
• DQMHistoTests: Total successes: 3630260
• DQMHistoTests: Total skipped: 22
• DQMHistoTests: Total Missing objects: 0
• DQMHistoSizes: Histogram memory added: 0.0 KiB( 48 files compared)
• Checked 205 log files, 45 edm output root files, 49 DQM output files
• TriggerResults: no differences found

[civanch]

+1

[qliphy]

+1

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next CMSSW_12_3_X IBs (tests are also fine) and once validation in the development release cycle CMSSW_12_5_X is complete. This pull request will be automatically merged.