Use consumes interface for TrackerHitAssociator(RECO)

[wmtan]

This PR modifies uses of TrackerHitAssocator to use the consumes interface needed for multithreading. This PR is for packages in the Reco L2 category.

[cmsbuild]

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

Use consumes interface for TrackerHitAssociator(RECO)

It involves the following packages:

RecoLocalTracker/SiStripClusterizer
RecoLocalTracker/SubCollectionProducers
RecoPixelVertexing/PixelLowPtUtilities
RecoTracker/DebugTools

@cmsbuild, @cvuosalo, @nclopezo, @slava77 can you please review it and eventually sign? Thanks.
@ghellwig, @nickmccoll, @makortel, @forthommel, @yduhm, @GiacomoSguazzoni, @gbenelli, @rovere, @VinInn, @appeltel, @mschrode, @jlagram, @gpetruc, @cerati, @threus, @dgulhan, @venturia this is something you requested to watch as well.
You can sign-off by replying to this message having '+1' in the first line of your reply.
You can reject by replying to this message having '-1' in the first line of your reply.
If you are a L2 or a release manager you can ask for tests by saying 'please test' in the first line of a comment.
@nclopezo you are the release manager for this.
You can merge this pull request by typing 'merge' in the first line of your comment.

[cmsbuild]

+1
Tested at: 756df63
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-9093/5259/summary.html

[cmsbuild]

Comparison is ready
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-9093/5259/summary.html

[slava77]

+1

for #9093 756df63

• changes in the code introduce, as expected, the consumesCollector info for TrackerHitAssociator
• jenkins tests complete OK and comparisons with baseline show no difference

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next CMSSW_7_5_X IBs unless changes (tests are also fine). This pull request requires discussion in the ORP meeting before it's merged. @davidlange6, @nclopezo, @smuzaffar

[davidlange6]

+1