add HI-related products for pp runs in event content keep statements (same as #12520)

[slava77]

customize function from #12185
didn't work with event contents built in pure python from ConfigBuilder as used in event processing.
Making a kludge here for 75X.

cmsDriver.py worked, however. So, customs function can still be used there

[slava77]

@cmsbuild please test

[cmsbuild]

The tests are being triggered in jenkins.
https://cmssdt.cern.ch/jenkins/job/ib-any-integration/9888/console

[cmsbuild]

A new Pull Request was created by @slava77 (Slava Krutelyov) for CMSSW_7_5_X.

It involves the following packages:

RecoEcal/Configuration
RecoEgamma/Configuration

@cmsbuild, @cvuosalo, @davidlange6, @slava77 can you please review it and eventually sign? Thanks.
@Sam-Harper, @argiro, @lgray this is something you requested to watch as well.
@slava77, @Degano, @smuzaffar you are the release manager for this.

Following commands in first line of a comment are recognized

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• [@cmsbuild,] please test: L1/L2 and selected users to start jenkins tests
• [@cmsbuild,] please test with cms-sw/cmsdist#<PR>: L1/L2 and selected users to start jenkins tests using externals from cmsdist

[cmsbuild]

+1
Tested at: 93bb4c0
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-12530/9888/summary.html

[cmsbuild]

Comparison is ready
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-12530/9888/summary.html

[slava77]

+1

for #12530 93bb4c0

• the same update as went to 755patch4

[slava77]

merge

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next CMSSW_7_5_X IBs (tests are also fine) and once validation in the development release cycle CMSSW_7_6_X is complete. This pull request requires discussion in the ORP meeting before it's merged. @slava77, @davidlange6, @Degano, @smuzaffar