[93X] Fix geometry centering tool.

[ghellwig]

backport of #20499

The previous sign-flip in the geometry comparison tool broke the geometry centering tool.
While fixing this I found with the help of @cschomak that one sign flip too much introduced previously.

[cmsbuild]

A new Pull Request was created by @ghellwig (Gregor Mittag) for CMSSW_9_3_X.

It involves the following packages:

Alignment/OfflineValidation
Configuration/AlCa

@ghellwig, @arunhep, @cerminar, @cmsbuild, @franzoni, @lpernie can you please review it and eventually sign? Thanks.
@ghellwig, @makortel, @tocheng, @Martin-Grunewald, @tlampen, @mschrode, @mmusich this is something you requested to watch as well.
@davidlange6, @slava77 you are the release manager for this.

cms-bot commands are listed here

• Backported from [94X] Fix geometry centering tool. #20499

[ghellwig]

please test

[cmsbuild]

The tests are being triggered in jenkins.
https://cmssdt.cern.ch/jenkins/job/ib-any-integration/22953/console Started: 2017/09/13 18:06

[cmsbuild]

+1
Tested at: 57f53ec
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-20500/22953/summary.html

The following merge commits were also included on top of IB + this PR after doing git cms-merge-topic:
9fb6347
You can see more details here:
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-20500/22953/git-log-recent-commits
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-20500/22953/git-merge-result

[cmsbuild]

Comparison job queued.

[cmsbuild]

Comparison is ready
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-20500/22953/summary.html

Comparison Summary:

• No significant changes to the logs found
• Reco comparison results: 0 differences found in the comparisons
• DQMHistoTests: Total files compared: 26
• DQMHistoTests: Total histograms compared: 2641982
• DQMHistoTests: Total failures: 202
• DQMHistoTests: Total nulls: 0
• DQMHistoTests: Total successes: 2641591
• DQMHistoTests: Total skipped: 189
• DQMHistoTests: Total Missing objects: 0
• Checked 107 log files, 14 edm output root files, 26 DQM output files

[arunhep]

+1

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next CMSSW_9_3_X IBs (tests are also fine) and once validation in the development release cycle CMSSW_9_4_X is complete. This pull request will now be reviewed by the release team before it's merged. @davidlange6, @slava77, @smuzaffar (and backports should be raised in the release meeting by the corresponding L2)

[davidlange6]

+1