If unit test fails, return a non-zero exit code

[wmtan]

This pull request affects unit tests only.
Many unit tests in CondCore/* packages return a zero return value even if the test fails. This causes failures to not be reported as failures in the IB.
In the ROOT 6 IB, there were approximately 15 test failures that were not noticed until now because of this.
Since these code changes are not ROOT 6 specific, they are being pull requested in the main 7_3_X branch for code commonality.
Fortunately. all the affected unit tests pass in the 7_3_X IB.

[cmsbuild]

A new Pull Request was created by @wmtan for CMSSW_7_3_X.

If unit test fails, return a non-zero exit code

It involves the following packages:

CondCore/DBCommon
CondCore/IOVService
CondCore/ORA

@apfeiffer1, @nclopezo, @cerminar, @cmsbuild, @diguida, @rcastello, @ggovi, @mmusich can you please review it and eventually sign? Thanks.
@ghellwig 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.
@nclopezo, @ktf you are the release manager for this.
You can merge this pull request by typing 'merge' in the first line of your comment.

[apfeiffer1]

+1
Thanks, Bill !

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next CMSSW_7_3_X IBs unless changes or unless it breaks tests. This pull request requires discussion in the ORP meeting before it's merged. @nclopezo, @ktf, @ktf, @davidlange6, @smuzaffar

[cmsbuild]

+1
Tested at: d48f059
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-6317/785/summary.html

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next CMSSW_7_3_X IBs unless changes (tests are also fine). This pull request requires discussion in the ORP meeting before it's merged. @nclopezo, @ktf, @ktf, @davidlange6, @smuzaffar

[ktf]

This is trivial (and annoying) enough to be bypassed.

[cmsbuild]

Comparison is ready
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-6317/785/summary.html