[11.0.X] fix alignment validation plotting macro

[mmusich]

Backport of #28516

PR description:

Trivial bug-fix of off-by-one issue introduced in PR #27984

PR validation:

Plotting of alignment PV Validation now works.

if this PR is a backport please specify the original PR:

Backport of #28516

[mmusich]

type bug-fix

[cmsbuild]

A new Pull Request was created by @mmusich (Marco Musich) for CMSSW_11_0_X.

It involves the following packages:

Alignment/OfflineValidation

@christopheralanwest, @tocheng, @cmsbuild, @franzoni, @tlampen, @pohsun can you please review it and eventually sign? Thanks.
@mschrode, @mmusich, @adewit, @tocheng, @tlampen this is something you requested to watch as well.
@davidlange6, @slava77, @fabiocos you are the release manager for this.

cms-bot commands are listed here

• Backported from fix alignment validation plotting macro #28516

[mmusich]

can test be started here? It would be good to include this PR for 11.0.0

[christopheralanwest]

please test

[cmsbuild]

The tests are being triggered in jenkins.
https://cmssdt.cern.ch/jenkins/job/ib-run-pr-tests/3751/console Started: 2019/12/03 15:05

[cmsbuild]

+1
Tested at: 5473bf3
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-cda2d4/3751/summary.html

[cmsbuild]

Comparison job queued.

[cmsbuild]

Comparison is ready
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-cda2d4/3751/summary.html

Comparison Summary:

• No significant changes to the logs found
• Reco comparison results: 2 differences found in the comparisons
• DQMHistoTests: Total files compared: 34
• DQMHistoTests: Total histograms compared: 2793840
• DQMHistoTests: Total failures: 2
• DQMHistoTests: Total nulls: 0
• DQMHistoTests: Total successes: 2793497
• DQMHistoTests: Total skipped: 341
• DQMHistoTests: Total Missing objects: 0
• DQMHistoSizes: Histogram memory added: 0.0 KiB( 33 files compared)
• Checked 147 log files, 16 edm output root files, 34 DQM output files

[christopheralanwest]

+1

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next CMSSW_11_0_X IBs (tests are also fine) and once validation in the development release cycle CMSSW_11_1_X is complete. This pull request will now be reviewed by the release team before it's merged. @davidlange6, @slava77, @smuzaffar, @fabiocos (and backports should be raised in the release meeting by the corresponding L2)

[fabiocos]

+1