Run3-gem64 Update the GEM demontrator gemetry

[bsunanda]

PR description:

Update the GEM demontrator gemetry (shift position of the chamber)

PR validation:

Tested using the overlap checking tool

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

Nothing special

[cmsbuild]

+code-checks

Logs: https://cmssdt.cern.ch/SDT/code-checks/cms-sw-PR-36470/27328

• This PR adds an extra 20KB to repository

[cmsbuild]

A new Pull Request was created by @bsunanda (Sunanda Banerjee) for master.

It involves the following packages:

• Geometry/MuonCommonData (geometry)

@civanch, @Dr15Jones, @makortel, @cvuosalo, @ianna, @mdhildreth, @cmsbuild can you please review it and eventually sign? Thanks.
@ptcox, @fabiocos, @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

[bsunanda]

@cmsbuild Please test

[cvuosalo]

@bsunanda To avoid confusion, please add to the PR description a note that the gem21.xml file in this PR has never yet been included in 2021 DB geometry, so it is safe to change it without creating a v2.

[cmsbuild]

+1

Summary: https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-2aad9e/21222/summary.html
COMMIT: 16ef9bd
CMSSW: CMSSW_12_3_X_2021-12-13-1100/slc7_amd64_gcc900
User test area: For local testing, you can use /cvmfs/cms-ci.cern.ch/week1/cms-sw/cmssw/36470/21222/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: 42
• DQMHistoTests: Total histograms compared: 3250704
• DQMHistoTests: Total failures: 5
• DQMHistoTests: Total nulls: 1
• DQMHistoTests: Total successes: 3250676
• DQMHistoTests: Total skipped: 22
• DQMHistoTests: Total Missing objects: 0
• DQMHistoSizes: Histogram memory added: 0.004 KiB( 41 files compared)
• DQMHistoSizes: changed ( 312.0 ): 0.004 KiB MessageLogger/Warnings
• Checked 177 log files, 37 edm output root files, 42 DQM output files
• TriggerResults: no differences found

[cvuosalo]

+1

[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. @perrotta, @dpiparo, @qliphy (and backports should be raised in the release meeting by the corresponding L2)

[perrotta]

+1