Correcting L1 trigger printout and multithreading

[avetisya]

This is an exact copy of PR #6704 to keep 73X up to date. The description of the original PR is below:

This PR modifies the output format of the L1 JSON by making sure that unassigned trigger bits (i.e. those without names) are included in the JSON file. This is necessary because the database expects vectors of a fixed size (even if the information in some entries is meaningless) whereas with the old approach the size could vary.

There is also a very small fix to the multithreading. A more thorough revision of the latter will be done after the mid-week global run.

[cmsbuild]

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

Correcting L1 trigger printout and multithreading

It involves the following packages:

HLTrigger/JSONMonitoring

@Martin-Grunewald, @perrotta, @cmsbuild, @nclopezo, @fwyzard can you please review it and eventually sign? Thanks.
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 you are the release manager for this.
You can merge this pull request by typing 'merge' in the first line of your comment.

[Martin-Grunewald]

+1

[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. @davidlange6, @nclopezo, @ktf, @smuzaffar

[cmsbuild]

+1
Tested at: bbadcb9
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-6705/1332/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. @davidlange6, @nclopezo, @ktf, @smuzaffar

[davidlange6]

+1