Fix bug preventing the use of a local cache

[Dr15Jones]

The last change to the logic of when a local cache could be used had
an error which accidently disabled any use of a local cache. This change
corrects the logic and a quick test shows that local caching is working
again.

[cmsbuild]

A new Pull Request was created by @Dr15Jones (Chris Jones) for CMSSW_7_5_X.

Fix bug preventing the use of a local cache

It involves the following packages:

Utilities/StorageFactory

@cmsbuild, @smuzaffar, @Dr15Jones can you please review it and eventually sign? Thanks.
@Martin-Grunewald, @wddgit 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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[Dr15Jones]

please test

[cmsbuild]

The tests are being triggered in jenkins.

[cmsbuild]

+1
Tested at: 23a0e48
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-11010/7721/summary.html

[cmsbuild]

Comparison is ready
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-11010/7721/summary.html

[Dr15Jones]

+1

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next CMSSW_7_5_X IBs once checked with relvals in the development release cycle of CMSSW (tests are also fine). This pull request requires discussion in the ORP meeting before it's merged. @davidlange6, @Degano, @smuzaffar

[davidlange6]

+1