Migrate to new random service interface

[wddgit]

Migrate the RandomFilter module to the new random
service interface designed for multithreading.

[cmsbuild]

A new Pull Request was created by @wddgit (W. David Dagenhart) for CMSSW_7_1_X.

Migrate to new random service interface

It involves the following packages:

IOMC/RandomEngine

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

+1
@ktf This also seems like it should be generators and not core

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next CMSSW_7_1_X IBs unless changes or unless it breaks tests. @nclopezo, @ktf can you please take care of it?

[wddgit]

IOMC/RandomEngine is probably really a core package because it contains the random number service itself, used by simulation and generators and anything else using random numbers. The module which is changed is just used for some tests, and they are not generator tests. (For the other package though, I agree the ParticleGuns package ought to be in the generators category)

[cmsbuild]

+1
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-2771/413/summary.html

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next CMSSW_7_1_X IBs unless changes (tests are also fine). @nclopezo, @ktf can you please take care of it?