Fix for conddb python tools

[ggovi]

Fix to support reading from early V2 format, where no GT tables are available.

[cmsbuild]

A new Pull Request was created by @ggovi for CMSSW_8_0_X.

Fix for conddb python tools

It involves the following packages:

CondCore/Utilities

@ggovi, @cmsbuild can you please review it and eventually sign? Thanks.
@ghellwig, @apfeiffer1 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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[ggovi]

@cmsbuild please test

[cmsbuild]

The tests are being triggered in jenkins.
https://cmssdt.cern.ch/jenkins/job/ib-any-integration/9477/console

[cmsbuild]

+1
Tested at: 299abf4
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-12266/9477/summary.html

[cmsbuild]

Comparison is ready
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-12266/9477/summary.html

[ggovi]

+1

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next CMSSW_8_0_X IBs (tests are also fine). This pull request requires discussion in the ORP meeting before it's merged. @davidlange6, @Degano, @smuzaffar

[davidlange6]

+1