Add scouting electron, photon, and muon classes and producers

[davidsheffield]

Backport of #11132.

[cmsbuild]

A new Pull Request was created by @davidsheffield (David Sheffield) for CMSSW_7_4_X.

Add scouting electron, photon, and muon classes and producers

It involves the following packages:

DataFormats/Scouting
HLTrigger/Egamma
HLTrigger/Muon

The following packages do not have a category, yet:

DataFormats/Scouting

@Martin-Grunewald, @perrotta, @cmsbuild, @fwyzard can you please review it and eventually sign? Thanks.
@Martin-Grunewald, @abbiendi, @trocino, @jhgoh, @battibass 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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[fwyzard]

HLTrigger/Egamma already defines only plugins (in the /src directory), you should not use a new /plugins directory, just put the .cc files in the /src directory.

[fwyzard]

-1

[davidsheffield]

@fwyzard I have moved the plugins to the src directories.

[cmsbuild]

Pull request #11133 was updated. @Martin-Grunewald, @perrotta, @cmsbuild, @fwyzard can you please check and sign again.

[fwyzard]

please test

[cmsbuild]

The tests are being triggered in jenkins.

[cmsbuild]

+1
Tested at: 26ddfc8
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-11133/7907/summary.html

[cmsbuild]

Comparison is ready
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-11133/7907/summary.html

[Martin-Grunewald]

+1