Reorganize sequences for the harvesting modules of PV and V0 validation

[makortel]

This PR creates a common sequence to contain the harvesting modules of primary vertex and V0 validation, and that sequence is then added to postValidation sequence. The main motivation for this reorganization is to include postProcessorV0 in postProcessorVertexStandAlone (since the V0 validation is part of vertexValidationStandalone).

Tested in 800pre2, no changes expected.

@rovere @VinInn

[cmsbuild]

A new Pull Request was created by @makortel (Matti Kortelainen) for CMSSW_8_0_X.

It involves the following packages:

Validation/Configuration
Validation/RecoVertex

@civanch, @cvuosalo, @mdhildreth, @cmsbuild, @deguio, @slava77, @vanbesien, @davidlange6 can you please review it and eventually sign? Thanks.
@GiacomoSguazzoni, @rovere, @VinInn, @istaslis, @cerati, @dgulhan, @venturia this is something you requested to watch as well.
@slava77, @Degano, @smuzaffar you are the release manager for this.

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[VinInn]

@cmsbuild, please test

[cmsbuild]

The tests are being triggered in jenkins.
https://cmssdt.cern.ch/jenkins/job/ib-any-integration/9983/console

[cmsbuild]

+1
Tested at: e238a40
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-12585/9983/summary.html

[cmsbuild]

Comparison is ready
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-12585/9983/summary.html

[civanch]

+1

[deguio]

+1

[slava77]

+1

for #12585 e238a40

• changes not really affecting reco: mild reorganization of a post-processing sequence
• jenkins tests pass and comparisons with the baseline show no differences

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next CMSSW_8_0_X IBs (tests are also fine). This pull request requires discussion in the ORP meeting before it's merged. @slava77, @davidlange6, @Degano, @smuzaffar

[davidlange6]

+1