HLT Btag validation code update

[silviodonato]

This PR includes:

• bug fixes (problem with normalization in DQM GUI),
• add PF b-tag monitoring
• add hltVerticesPF monitoring
• add new triggers to monitor. In particular we are adding trigger without b-tag cuts to get an unbiased b-tag discriminant distribution and to have more events. The idea is to monitor:
  HLT_PFMET120_NoiseCleaned_BTagCSV07_* (already monitored, Calo b-tag)
  HLT_CaloMHTNoPU90_PFMET90_PFMHT90_IDLoose_* (new, Calo b-tag)
  HLT_QuadPFJet_VBF_* (new, Calo b-tag)
  HLT_Ele32_eta2p1_* (new, PF b-tag)
  HLT_IsoMu24_eta2p1_* (new, PF b-tag)
  Having two triggers for each kind of b-tagging helps to understand possible problems.
• use gen jet to match parton with jets (to compare Calo with PF b-tagging).
  An example of the output is: /afs/cern.ch/user/s/sdonato/public/DQM_V0001_R000000001__test__RelVal__TrigVal.root

[cmsbuild]

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

HLT Btag validation code update

It involves the following packages:

HLTriggerOffline/Btag

@cmsbuild, @danduggan, @nclopezo, @deguio can you please review it and eventually sign? Thanks.
@ferencek, @acaudron, @pvmulder, @imarches this is something you requested to watch as well.
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@nclopezo you are the release manager for this.
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[deguio]

please test

[deguio]

+1
provided it passes the tests

[cmsbuild]

The tests are being triggered in jenkins.

[cmsbuild]

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

[cmsbuild]

Comparison is ready
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-8973/4564/summary.html

[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, @smuzaffar

[davidlange6]

+1