Store the dqm file

[apsallid]

An option is added (--keepDQMfile) so that, if used, at the RECO step the DQM file will also be stored locally or in eos in a separate folder.

[apsallid]

Hi @rovere , @clelange ,

I just wanted to clarify that the DQM file that is stored with this PR is in edm format. The harvesting step is not executed in order to save the DQM file in plain ROOT format.
I thought in this way this would be more generic, but if you feel like we should add the harvesting step I can work on that. However, that may be useful for me, but for others it may add more unnecessary complexity to the repository. Personally, I just add an extra cmsDriver command in the RECO step in the SubmitFileGSD.sh script, which of course is not the correct way to do since all the options are hardcoded, but it does the job.

[clelange]

@apsallid - I think we should just use whatever works best for you, you're the main user of this feature. If anyone else wants to use this, we can re-discuss.
@rovere - Are there any short-term plans from your side or anyone else you could think of who might want to use anything beyond what Andreas has implemented

[rovere]

@clemens, for the moment I think this PR is more than enough.