pp RECO with HI photon isolation using "customise" option

[ttrk]

This PR adds the HI-style isolation to the pp photon sequences. Heavy Ions needs this information during the pp reference run in order to do proper comparisons to PbPb results, where this information will be used for photon ID.

It will add two instances of the HIPhotonIsolation ValueMap, one for "std" photons and another for GED photons to the RECO and AOD event content for pp events.

This PR was suggested by @davidlange6 in the relevant PR for 76X : #12262
see comment : #12262 (comment)

@richard-cms
@yenjie

[cmsbuild]

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

It involves the following packages:

RecoHI/Configuration
RecoHI/HiEgammaAlgos

@cmsbuild, @cvuosalo, @davidlange6, @slava77 can you please review it and eventually sign? Thanks.
@MiheeJo, @jazzitup, @richard-cms, @echapon, @yenjie, @kurtejung, @istaslis, @mandrenguyen, @dgulhan, @yetkinyilmaz 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

[slava77]

@cmsbuild please test

[cmsbuild]

The tests are being triggered in jenkins.
https://cmssdt.cern.ch/jenkins/job/ib-any-integration/10704/console

[cmsbuild]

+1
Tested at: de90e22
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-13047/10704/summary.html

[cmsbuild]

Comparison is ready
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-13047/10704/summary.html

[cvuosalo]

+1

For #13047 de90e22

For Heavy Ions, adding HI-style isolation to the pp photon sequences. #12262 is the matching 76X version of this PR, and it was approved but never merged.

The code changes are satisfactory, and Jenkins tests against baseline CMSSW_8_0_X_2016-01-22-2300 show no significant differences.

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next CMSSW_8_0_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