Fix PCL workflows for HI scenario

[cerminar]

This PR updates the configuration of the AlcaRecos for HI to include those needed for running PCL in HeavyIon scenario.
It also introduces a dedicated RelVal workflow (1004) for running PCL on 2011 HI data.

[cmsbuild]

A new Pull Request was created by @cerminar for CMSSW_7_5_X.

Fix PCL workflows for HI scenario

It involves the following packages:

Configuration/AlCa
Configuration/PyReleaseValidation
Configuration/StandardSequences

@diguida, @danduggan, @boudoul, @franzoni, @cerminar, @fabozzi, @cmsbuild, @srimanob, @mmusich, @davidlange6 can you please review it and eventually sign? Thanks.
@ghellwig, @makortel, @GiacomoSguazzoni, @rovere, @VinInn, @Martin-Grunewald, @cerati, @dgulhan this is something you requested to watch as well.
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[mmusich]

please test

[cmsbuild]

The tests are being triggered in jenkins.
https://cmssdt.cern.ch/jenkins/job/ib-any-integration/9471/console

[cmsbuild]

+1
Tested at: 2b496e0
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-12264/9471/summary.html

[mmusich]

+1

[cmsbuild]

Comparison is ready
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-12264/9471/summary.html