Fixed checksum upload validation when compressing LHE files

[davidsheffield]

Port of #11088 to 8_0_X.

[cmsbuild]

A new Pull Request was created by @davidsheffield (David Sheffield) for CMSSW_8_0_X.

It involves the following packages:

GeneratorInterface/LHEInterface

@vciulli, @covarell, @thuer, @cmsbuild, @bendavid, @davidlange6, @govoni can you please review it and eventually sign? Thanks.
@mkirsano this is something you requested to watch as well.
@slava77, @Degano, @smuzaffar you are the release manager for this.

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[covarell]

+1

[cmsbuild]

The tests are being triggered in jenkins.
https://cmssdt.cern.ch/jenkins/job/ib-any-integration/10064/console

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next CMSSW_8_0_X IBs after it passes the integration tests. This pull request requires discussion in the ORP meeting before it's merged. @slava77, @davidlange6, @Degano, @smuzaffar

[cmsbuild]

+1
Tested at: be12b52
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-12571/10064/summary.html

[cmsbuild]

Comparison is ready
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-12571/10064/summary.html

[davidlange6]

+1