[10.2.X] Add switch to contrain vertex refit to BeamSpot in Alignment PV Validation

[mmusich]

Greetings,
this PR is meant to introduce a new configuration switch in the Alignment Primary Vertex Validation to allow using the Beam Spot from DB information in the unbiased vertex refit procedure. By default this is switched to False, so in normal conditions this addition is completely transparent to the validation procedure.
This has been shown to be useful to cross-check the scrutiny of the Full-Track validation of the alignment payload at this Hypernews thread.
See here an example of output validation plot obtained for run 31766 either in standard conditions, forcing the vertex fit with the BS from DB prior to re-computation of BS with the new alignment and forcing the vertex fit with the updated BS.

I profit of this PR also to update the initialization file of the all-in-one meta-data tool adding links to the twiki documentation.

[cmsbuild]

The code-checks are being triggered in jenkins.

[cmsbuild]

+code-checks

Logs: https://cmssdt.cern.ch/SDT/code-checks/cms-sw-PR-23448/4986

[cmsbuild]

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

It involves the following packages:

Alignment/OfflineValidation

@cmsbuild, @franzoni, @arunhep, @cerminar, @lpernie can you please review it and eventually sign? Thanks.
@mschrode, @mmusich, @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

[lpernie]

please test

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The tests are being triggered in jenkins.
https://cmssdt.cern.ch/jenkins/job/ib-any-integration/28423/console Started: 2018/06/04 16:00

[cmsbuild]

+1
Tested at: 2bb235a
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-23448/28423/summary.html

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Comparison job queued.

[cmsbuild]

Comparison is ready
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-23448/28423/summary.html

Comparison Summary:

• No significant changes to the logs found
• Reco comparison results: 0 differences found in the comparisons
• DQMHistoTests: Total files compared: 31
• DQMHistoTests: Total histograms compared: 2902471
• DQMHistoTests: Total failures: 2
• DQMHistoTests: Total nulls: 0
• DQMHistoTests: Total successes: 2902279
• DQMHistoTests: Total skipped: 190
• DQMHistoTests: Total Missing objects: 0
• DQMHistoSizes: Histogram memory added: 0.0 KiB( 30 files compared)
• Checked 128 log files, 14 edm output root files, 31 DQM output files

[lpernie]

+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. @davidlange6, @slava77, @smuzaffar, @fabiocos (and backports should be raised in the release meeting by the corresponding L2)

[fabiocos]

+1