Fastsim cmsdriver digirecomix

[lveldere]

All FullSim cmsDriver pileup options are now available for FastSim, automatically.
FastSim specific pile-up options no longer exist.
Except that Gen-mixing is requested by prepending the pu option with 'GEN_'

FastSim runTheMatrix wfs were updated to this new syntax

this pr builds on #7302
review will be easier when that one is merged.

wfs 5.1, 135.1, 25400.0 run

changes will be scrutinised further the next days,
and possible cfg mistakes will be fixed in

[cmsbuild]

A new Pull Request was created by @lveldere for CMSSW_7_4_X.

Fastsim cmsdriver digirecomix

It involves the following packages:

Configuration/Applications
Configuration/PyReleaseValidation
Configuration/StandardSequences
FastSimulation/Configuration
FastSimulation/ParticleFlow
FastSimulation/PileUpProducer
FastSimulation/Tracking

@civanch, @nclopezo, @lveldere, @boudoul, @franzoni, @mdhildreth, @cmsbuild, @srimanob, @davidlange6 can you please review it and eventually sign? Thanks.
@ghellwig, @Martin-Grunewald, @makortel, @GiacomoSguazzoni, @rovere, @VinInn, @appeltel, @matt-komm, @cerati, @dgulhan this is something you requested to watch as well.
You can sign-off by replying to this message having '+1' in the first line of your reply.
You can reject by replying to this message having '-1' in the first line of your reply.
If you are a L2 or a release manager you can ask for tests by saying 'please test' in the first line of a comment.

[lveldere]

@cmsbuild

can you please initiate tests?

[ghost]

@cmsbuild please test

[cmsbuild]

The tests are being triggered in jenkins.

[cmsbuild]

+1
Tested at: 97bd484
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-7306/2048/summary.html

[lveldere]

@pdmv @operations, please review

[davidlange6]

+1

we usually do after others sign (which happened 5 hours ago..)

[davidlange6]

bypassing this PR in for pre6 - please bring up any issues as needed (I don't see any pending)