updates RecoEgamma-ElectronIdentification to use new tag

[iahmad-khan]

#2693

[cmsbuild]

A new Pull Request was created by @iahmad-khan (Ijaz ahmad khan) for branch IB/CMSSW_8_1_X/gcc530.

@cmsbuild, @smuzaffar, @iahmad-khan, @davidlange6 can you please review it and eventually sign? Thanks.
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[iahmad-khan]

please test

[cmsbuild]

The tests are being triggered in jenkins.
https://cmssdt.cern.ch/jenkins/job/cmsdist-test-pr/422/console

[cmsbuild]

+1
Tested at: e7ad34e
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-2695/422/summary.html

[cmsbuild]

Comparison job queued.

[cmsbuild]

Comparison is ready
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-2695/422/summary.html

[smuzaffar]

+externals
@davidlange6 , feel free to merge it for 80X

[smuzaffar]

backport of #2690

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next IB/CMSSW_8_1_X/gcc530 IBs (tests are also fine). This pull request requires discussion in the ORP meeting before it's merged. @slava77, @davidlange6, @smuzaffar