74X backport assign muon PDG id using PFMuon charge

[jhgoh]

Backport of #11838 to fix wrong pdg id assignment of muons

[cmsbuild]

A new Pull Request was created by @jhgoh (Junghwan John Goh) for CMSSW_7_4_X.

74X backport assign muon PDG id using PFMuon charge

It involves the following packages:

RecoMuon/MuonIdentification

@cmsbuild, @cvuosalo, @slava77 can you please review it and eventually sign? Thanks.
@battibass, @abbiendi, @bellan, @trocino, @bachtis, @rociovilar this is something you requested to watch as well.
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@Degano you are the release manager for this.
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[slava77]

Considering that the bug has a 4-year history of being validated, I don't think fix is needed in 74X (open only to fixes in data processing operational issues)

[jhgoh]

I'm closing this PR.