HGC V6 Geometry RECO step patch.

[lgray]

Simple patch to allow reco step of HGC v6 geometry workflows to run.

This is for geometry validation purposes only, no high level RECO work will be done on this geometry.

@vandreev11 @pfs

[lgray]

@bsunanda -- to keep you in the loop

[cmsbuild]

A new Pull Request was created by @lgray (Lindsey Gray) for CMSSW_6_2_X_SLHC.

HGC V6 Geometry RECO step patch.

It involves the following packages:

RecoParticleFlow/PFClusterProducer
SLHCUpgradeSimulations/Configuration

@cmsbuild, @cvuosalo, @civanch, @mdhildreth, @slava77 can you please review it and eventually sign? Thanks.
@Martin-Grunewald, @makortel, @mmarionncern, @bachtis this is something you requested to watch as well.
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@fratnikov, @mark-grimes you are the release manager for this.
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[mark-grimes]

merge

Tested privately with 12262,13262,15662.