Fix/silence warnings in tau trigger DQM

[makortel]

Fixes/silences the warnings reported by Giulio in https://hypernews.cern.ch/HyperNews/CMS/get/swReleases/4012.html. The filter types HLT1Tau and HLT2MuonTau used in 2011 HLT menu were not recognized (an oversight by me). The other warning about "not finding any paths matching to regex" I silenced by decreasing the message level to LogInfo. We will probably anyway move in the near future to monitor all tau paths in a generic way, making this regex-path matching (and the now-LogInfo message) obsolete.

FYI @mbluj

[cmsbuild]

A new Pull Request was created by @makortel (Matti Kortelainen) for CMSSW_7_1_X.

Fix/silence warnings in tau trigger DQM

It involves the following packages:

DQMOffline/Trigger

@ojeda, @danduggan, @rovere, @cmsbuild, @nclopezo, @deguio, @Degano can you please review it and eventually sign? Thanks.
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@nclopezo, @ktf you are the release manager for this.
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[cmsbuild]

+1
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-2574/264/summary.html

[deguio]

+1

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next CMSSW_7_1_X IBs unless changes (tests are also fine). @nclopezo, @ktf can you please take care of it?