Add heavy ion EventPlane histograms to the Centrality DQM code

[satan1028]

Added 6 histograms to DQM code

[cmsbuild]

A new Pull Request was created by @satan1028 for CMSSW_7_5_X.

Add EP to DQM

It involves the following packages:

DQM/Physics

@cmsbuild, @danduggan, @nclopezo, @deguio can you please review it and eventually sign? Thanks.
@rappoccio this is something you requested to watch as well.
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[cmsbuild]

+1
Tested at: 66fb7da
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-8449/3683/summary.html

[cmsbuild]

Comparison is ready
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-8449/3683/summary.html

[BetterWang]

This is an update of the Centrality DQM with plots of Heavy Ion event-plane object.
We would like to have it in the relval to validate the event-plane code and calibration.
The event-plane code will be submitted in a future PR.

Thanks.

[deguio]

+1

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next CMSSW_7_5_X IBs unless changes (tests are also fine). This pull request requires discussion in the ORP meeting before it's merged. @davidlange6, @nclopezo, @ktf, @smuzaffar

[davidlange6]

@satan1028 - please change the title of this PR to something descriptive for the release notes. Thanks!

[davidlange6]

+1