Run2 hbhe noise filter clean up

[cmsbuild]

This is the cleanup version of the Run2 HBHE noise filter.

Compared to previous request (request #5123 ), a few changes are done:

1. Nothing is changed in HLTrigger/Configuration; now used preferred method of existsAs and descriptions
2. Style change following comments from previous request

Thanks,
Yi Chen

Automatically ported from CMSSW_7_2_X #5168

[cmsbuild]

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

Run2 hbhe noise filter clean up

It involves the following packages:

CommonTools/RecoAlgos
DataFormats/METReco
HLTrigger/JetMET
RecoLocalCalo/HcalRecAlgos
RecoLocalCalo/HcalRecProducers
RecoMET/METAlgorithms
RecoMET/METProducers

@perrotta, @cmsbuild, @nclopezo, @fwyzard, @Martin-Grunewald, @StoyanStoynev, @slava77 can you please review it and eventually sign? Thanks.
@nhanvtran, @TaiSakuma, @argiro, @mmarionncern, @schoef 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.

[nclopezo]

+1
The version of this PR in 7_2_X passed the jenkins tests.

[Martin-Grunewald]

+1

[slava77]

Compared to #5168 (comment),
the behavior now appears to be as expected:

• more entries with flags (QCD dijet no PU sample, matrix 38.0)
  
  
• more entries in the cleaned met plots (as I understand, now all the flags are ignored, and the number of entries in this particular plot is the same as the number of processed events; this is ttbar with 25 ns pu matrix 25202.0)
  

Timing seems ok (about 20% increase), as an example, ttbar with run 1 pu (matrix 202)

        hcalnoise        4.76537 ms/ev -> 6.05341 ms/ev

[slava77]

+1

for #5389 11d6443

tested in CMSSW_7_2_X_2014-09-15-0200 (test area sign429)

[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). @nclopezo, @ktf can you please take care of it?

[ktf]

@nclopezo, what happened to the comparison?