NominalCollision2015 beamspot: migration of SIM and RECO BS

[franzoni]

• SIM beamspot updated for postLs1: pp => NominalCollision2015 ; HI => RealisticHI2011Collision
• GT's changed to provide RECO postLs1 beamspot; this ensures that the matrix for postLs1 is consistent when re-doing GEN-SIM
• GEN-SIM recycle updated to point to postLs1 beamspot; this ensures that the matrix for postLs1 is consistent when re-cycling existing GEN-SIM
• various updates to names of GEN-SIM samples, following the py6 => py8 migration

[cmsbuild]

A new Pull Request was created by @franzoni (Giovanni Franzoni) for CMSSW_7_4_X.

NominalCollision2015 beamspot: migration of SIM and RECO BS

It involves the following packages:

Configuration/AlCa
Configuration/PyReleaseValidation
Configuration/StandardSequences

@nclopezo, @boudoul, @franzoni, @cerminar, @cmsbuild, @srimanob, @diguida, @rcastello, @mmusich, @davidlange6 can you please review it and eventually sign? Thanks.
@ghellwig, @Martin-Grunewald, @makortel, @GiacomoSguazzoni, @rovere, @VinInn, @appeltel, @cerati, @dgulhan this is something you requested to watch as well.
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[franzoni]

+1
summary of full-matrix tests: https://hypernews.cern.ch/HyperNews/CMS/get/swReleases/4153/1/2/1/1.html

[franzoni]

we need to keep an eye on the questions asked in #6982
That problem won't generate crashes in the matrix when operated recycling gen-sim. Once the questions will be answered, it may be easy to address.

[ktf]

please test

[cmsbuild]

Comparison is ready
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-7288/2016/summary.html

[diguida]

+1

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next CMSSW_7_4_X IBs unless changes (tests are also fine). This pull request will be automatically merged.