Get rid of postLS1 customisation function for premixing

[lveldere]

The premixing digi step (step2 in matrix workflows) still depends on postLS1 customisation functions
(e.g. runTheMatrix -l 250200,50400). This pr gets rid of that dependence.

postLS1 customisation functions are no longer necessary for premixing:
Indeed, the customisation function in

SLHCUpgradeSimulations/Configuration/python/postLS1CustomsPreMixing.py

takes the following actions

• the deprecated customisePostLS1 function is called.
  This is now replaced by adding the appropriate era option to the digi step in relval_steps.py
• the customisation function in Configuration/python/muonCustomsPreMixing.py is called
  This function has actually zero effect
  • line 5 is taken care of by the eras
  • line 8 and 9 are redundant (the correct settings are loaded in the premix digi step anyway)
  • line 13,14,17 and 18 have no effect on the digi step

Similar for FastSim.
FastSim premixing required some additional changes.
(part of the bugfix of #13071)

Tests: workflows 250400,250200,500200 run properly.

@mdhildreth

[cmsbuild]

A new Pull Request was created by @lveldere for CMSSW_8_0_X.

It involves the following packages:

Configuration/PyReleaseValidation
FastSimulation/Configuration

@civanch, @lveldere, @boudoul, @franzoni, @mdhildreth, @fabozzi, @cmsbuild, @ssekmen, @srimanob, @hengne, @davidlange6 can you please review it and eventually sign? Thanks.
@ghellwig, @matt-komm, @Martin-Grunewald this is something you requested to watch as well.
@slava77, @Degano, @smuzaffar you are the release manager for this.

cms-bot commands are list here #13028

[lveldere]

please test

[cmsbuild]

The tests are being triggered in jenkins.
https://cmssdt.cern.ch/jenkins/job/ib-any-integration/10744/console

[cmsbuild]

-1

Tested at: ecf7a1c
I found errors in the following addon tests:

cmsDriver.py RelVal -s L1REPACK:GT2 --data --scenario=HeavyIons -n 10 --conditions auto:run2_hlt_HIon --relval 9000,50 --datatier "RAW" --eventcontent RAW --customise=HLTrigger/Configuration/CustomConfigs.L1T --era Run2_HI --magField 38T_PostLS1 --fileout file:RelVal_Raw_HIon_DATA.root --filein /store/hidata/HIRun2015/HIHardProbes/RAW-RECO/HighPtJet-PromptReco-v1/000/263/689/00000/1802CD9A-DDB8-E511-9CF9-02163E0138CA.root : FAILED - time: date Tue Jan 26 17:07:05 2016-date Tue Jan 26 17:06:16 2016 s - exit: 23552
cmsRun /afs/cern.ch/cms/sw/ReleaseCandidates/vol1/slc6_amd64_gcc493/cms/cmssw-patch/CMSSW_8_0_X_2016-01-25-2300/src/HLTrigger/Configuration/test/OnLine_HLT_HIon.py realData=True globalTag=@ inputFiles=@ : FAILED - time: date Tue Jan 26 17:07:05 2016-date Tue Jan 26 17:06:16 2016 s - exit: 21504
cmsDriver.py RelVal -s HLT:HIon,RAW2DIGI,L1Reco,RECO --data --scenario=HeavyIons -n 10 --conditions auto:run2_data_HIon --relval 9000,50 --datatier "RAW-HLT-RECO" --eventcontent FEVTDEBUGHLT --customise=HLTrigger/Configuration/CustomConfigs.L1THLT --era Run2_HI --magField 38T_PostLS1 --processName=HLTRECO --filein file:RelVal_Raw_HIon_DATA.root --fileout file:RelVal_Raw_HIon_DATA_HLT_RECO.root : FAILED - time: date Tue Jan 26 17:07:05 2016-date Tue Jan 26 17:06:16 2016 s - exit: 21504

you can see the results of the tests here:
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-13072/10744/summary.html

[cmsbuild]

Comparison is ready
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-13072/10744/summary.html

[lveldere]

please test
(errors not related to this branch)

[cmsbuild]

The tests are being triggered in jenkins.
https://cmssdt.cern.ch/jenkins/job/ib-any-integration/10758/console

[lveldere]

+1

[cmsbuild]

+1
Tested at: ecf7a1c
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-13072/10758/summary.html

[cmsbuild]

Comparison is ready
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-13072/10758/summary.html