Make sure PLS1 PreMixing Customisation uses new HF shower library

[mdhildreth]

Backport of 5618 to 72X. Comment says it all.

[cmsbuild]

A new Pull Request was created by @mdhildreth for CMSSW_7_2_X.

Make sure PLS1 PreMixing Customisation uses new HF shower library

It involves the following packages:

SLHCUpgradeSimulations/Configuration

@cmsbuild, @civanch, @nclopezo, @mdhildreth can you please review it and eventually sign? Thanks.
You can sign-off by replying to this message having '+1' in the first line of your reply.
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@nclopezo you are the release manager for this.
You can merge this pull request by typing 'merge' in the first line of your comment.

[mdhildreth]

+1

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next CMSSW_7_2_X IBs unless changes or unless it breaks tests. @nclopezo can you please take care of it?

[cmsbuild]

+1
Tested at: bc43c95
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-5811/73/summary.html

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next CMSSW_7_2_X IBs unless changes (tests are also fine). @nclopezo can you please take care of it?

[cmsbuild]

Comparison is ready
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-5811/73/summary.html

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next CMSSW_7_2_X IBs unless changes (tests are also fine). @nclopezo can you please take care of it?