Add combMVAV2 to DQM common configuration

[pablodecm]

This PR adds combMVAV2 to the DQMOffline. Because the bTagGenericAnalysisBlock config
is used only a python configuration has to be modified.

I run several tests (FullSim, Data and FastSim) with the runTheMatrix.py script and everything
seem to work as expected.

This changes have to be backported to 75X and 74X as soon as possible.

[cmsbuild]

A new Pull Request was created by @pablodecm (Pablo de Castro) for CMSSW_7_6_X.

Add combMVAV2 to DQM common configuration

It involves the following packages:

DQMOffline/RecoB

@cmsbuild, @danduggan, @broen, @deguio can you please review it and eventually sign? Thanks.
@ferencek, @acaudron, @rociovilar, @pvmulder, @imarches this is something you requested to watch as well.
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[deguio]

please test

[cmsbuild]

The tests are being triggered in jenkins.

[cmsbuild]

+1
Tested at: b557973
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-11380/8249/summary.html

[cmsbuild]

Comparison is ready
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-11380/8249/summary.html

[deguio]

+1
consider backporting to 75 and 74

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next CMSSW_7_6_X IBs (tests are also fine). This pull request requires discussion in the ORP meeting before it's merged. @davidlange6, @Degano, @smuzaffar

[davidlange6]

+1