Replace getProcessParameterSet in PrescaleService

[wddgit]

This is part of a small migration to remove
the function getProcessParameterSet from
CMSSW. It relies on a static global that causes
multithreading issues. And it does not work
correctly with SubProcesses.

I replaced the function with an alternative that
should behave in exactly the same way.

[cmsbuild]

A new Pull Request was created by @wddgit (W. David Dagenhart) for CMSSW_7_5_X.

Replace getProcessParameterSet in PrescaleService

It involves the following packages:

FWCore/PrescaleService

@cmsbuild, @Dr15Jones can you please review it and eventually sign? Thanks.
@Martin-Grunewald, @wmtan this is something you requested to watch as well.
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@Degano you are the release manager for this.
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[Dr15Jones]

Please test

[Dr15Jones]

+1

[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 or unless it breaks tests. This pull request requires discussion in the ORP meeting before it's merged. @davidlange6, @Degano, @smuzaffar

[cmsbuild]

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

[cmsbuild]

Comparison is ready
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-9702/5594/summary.html

There are some workflows for which there are errors in the baseline:
25202.0 step 2
The results for the comparisons for these workflows could be incomplete
This means most likely that the IB is having errors in the relvals.The error does NOT come from this pull request

[cmsbuild]

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

[davidlange6]

+1