Added model files for egamma PFid DNN

[valsdav]

The new folder Photon_PFID_dnn contains both the tensorflow model files (.pb) and the configs files for the Egamma PFid DNN.
The .txt config files contain both the list of variables to be used for each model and their scaling configuration.

This is related to the PR cms-sw/cmssw#35403 for CMSSW_12_1_0.

[cmsbuild]

A new Pull Request was created by @valsdav (Davide Valsecchi) for branch master.

@smuzaffar, @mrodozov, @iarspider, @cmsbuild, @slava77, @jpata can you please review it and eventually sign? Thanks.
@Sam-Harper, @jainshilpi, @lgray, @sobhatta, @afiqaize, @wrtabb, @varuns23, @ram1123 this is something you requested to watch as well.
@perrotta, @dpiparo, @qliphy you are the release manager for this.
cms-bot commands are listed here

[jpata]

+reconstruction

• tested in Egamma PFID based on Tensorflow DNNs  cms-sw/cmssw#35403 (comment)
• please merge concurrently with Egamma PFID based on Tensorflow DNNs  cms-sw/cmssw#35403

[cmsbuild]

+1

Summary: https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-dbe0fd/19588/summary.html
COMMIT: 8f302f7
CMSSW: CMSSW_12_1_X_2021-10-12-2300/slc7_amd64_gcc900
User test area: For local testing, you can use /cvmfs/cms-ci.cern.ch/week0/cms-data/RecoEgamma-PhotonIdentification/9/19588/install.sh to create a dev area with all the needed externals and cmssw changes.

Comparison Summary

Summary:

• No significant changes to the logs found
• Reco comparison results: 2 differences found in the comparisons
• DQMHistoTests: Total files compared: 40
• DQMHistoTests: Total histograms compared: 2798082
• DQMHistoTests: Total failures: 5
• DQMHistoTests: Total nulls: 1
• DQMHistoTests: Total successes: 2798054
• DQMHistoTests: Total skipped: 22
• DQMHistoTests: Total Missing objects: 0
• DQMHistoSizes: Histogram memory added: 0.004 KiB( 39 files compared)
• DQMHistoSizes: changed ( 312.0 ): 0.004 KiB MessageLogger/Warnings
• Checked 169 log files, 37 edm output root files, 40 DQM output files
• TriggerResults: no differences found

[jpata]

Just to make sure we do the steps of coupled PRs correctly, could this PR with just new files be merged?

[perrotta]

+1

• Only new files are added, which will be needed by #35403

[perrotta]

@smuzaffar I can even merge this one myself (similar to cms-data/RecoEgamma-ElectronIdentification#23 but for photons rather than electron), but maybe you also want to have a look...

[smuzaffar]

+externals

[cmsbuild]

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

[smuzaffar]

new files only, bot has opened cms-sw/cmsdist#7389 which can be merged before cms-sw/cmssw#35403