recover event interpretation step in Tier0 processing (forward port of 74X #10060 )

[slava77]

the event interpretation sequence was a part of RECO in 53X.
It was split into a separate EI step in 620pre8. However, this was never propagated to T0 processing.
This PR adds the EI step to T0 processing scenarios deriving from pp ConfigBuilder scenario (as done in the matrix workflows)

tested in CMSSW_7_4_6_patch6 as a baseline as described in #10060

[cmsbuild]

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

recover event interpretation step in Tier0 processing (forward port of 74X #10060 )

It involves the following packages:

Configuration/DataProcessing

@cmsbuild, @franzoni, @davidlange6 can you please review it and eventually sign? Thanks.
@ghellwig, @Martin-Grunewald 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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[slava77]

@cmsbuild please test

[cmsbuild]

The tests are being triggered in jenkins.

[cmsbuild]

+1
Tested at: 64ca41b
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-10061/5955/summary.html

[cmsbuild]

Comparison is ready
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-10061/5955/summary.html