Restore CSCHaloData to AOD, which was inadvertently deleted by PR 11068

[cvuosalo]

#11068 was intended as a simple clean-up to replace certain wildcards in keep statements with explicit strings, but in the process a keep statement for recoCSCHaloData was accidentally deleted in RecoMET_EventContent_cff.py. This PR restores this missing CSC halo data to AOD.

[cmsbuild]

A new Pull Request was created by @cvuosalo (Carl Vuosalo) for CMSSW_7_6_X.

It involves the following packages:

RecoMET/Configuration

@cmsbuild, @cvuosalo, @davidlange6, @slava77 can you please review it and eventually sign? Thanks.
@TaiSakuma, @ahinzmann, @mmarionncern, @jdolen, @nhanvtran, @schoef, @mariadalfonso this is something you requested to watch as well.
@slava77, @Degano, @smuzaffar you are the release manager for this.

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[cvuosalo]

@cmsbuild please test

[cmsbuild]

The tests are being triggered in jenkins.
https://cmssdt.cern.ch/jenkins/job/ib-any-integration/10057/console

[cmsbuild]

+1
Tested at: 81f5446
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-12631/10057/summary.html

[cmsbuild]

Comparison is ready
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-12631/10057/summary.html

[cvuosalo]

+1

For #12631 81f5446

Restoring CSC halo data to AOD. There should be no change in monitored quantities.

Jenkins tests against baseline CMSSW_7_6_X_2015-12-01-1100 show no significant differences, as expected. Additional tests show that the CSC halo data has been restored to the AOD event content, while there is no change to the RECO or Mini-AOD content.

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next CMSSW_7_6_X IBs (tests are also fine). This pull request requires discussion in the ORP meeting before it's merged. @slava77, @davidlange6, @Degano, @smuzaffar

[davidlange6]

+1