Add DQM commands to the run2 era

[mark-grimes]

Adds the changes required for DQM to the run2 era. Note that the command is also still in the helper function, taking it out now would conflict with #7729 and having it twice is not harmful (the changes to postLS1Customs.py here are removing old commands, and these changes are common to the two PRs).

Testing has been limited, although there are no changes unless the run2 era is explicitly activated. I just made sure everything parses and the particular changes take effect. I'll do full comparisons between the customisation and era output once all the pull requests are in.

[cmsbuild]

A new Pull Request was created by @mark-grimes (Mark Grimes) for CMSSW_7_4_X.

Add DQM commands to the run2 era

It involves the following packages:

DQM/L1TMonitor
SLHCUpgradeSimulations/Configuration

@civanch, @nclopezo, @danduggan, @mdhildreth, @cmsbuild, @deguio can you please review it and eventually sign? Thanks.
@Martin-Grunewald 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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[davidlange6]

@cmsbuild, please test

[cmsbuild]

The tests are being triggered in jenkins.

[cmsbuild]

+1
Tested at: 98550f6
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-7730/2610/summary.html

[cmsbuild]

Comparison is ready
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-7730/2610/summary.html

[davidlange6]

bypassing era prs until fully working