python tool for BTagProbabilityToDiscriminator instances

[slava77]

This is a follow up to #28902
https://github.com/cms-sw/cmssw/pull/28902/files#r384794509

E.g. in pfParticleNetDiscriminatorsJetTags_cfi.py we have

• repeated list of the same denominators
• both numerator and denominator InputTags share the same module name

A more compact solution would be to add some python tool/methods to create instances of BTagProbabilityToDiscriminator with something like

qcdAnyList = ["QCDbb", "QCDcc", ... ]
...
probabilityPSet(name="TvsQCD", module = "pfParticleNetJetTags", 
    numeratorList = ["Tbcq", "Tbqq"], denominatorList= [numeratorList, qcdAnyList])

@hqucms @ferencek

[cmsbuild]

A new Issue was created by @slava77 Slava Krutelyov.

@Dr15Jones, @smuzaffar, @silviodonato, @makortel, @davidlange6, @fabiocos can you please review it and eventually sign/assign? Thanks.

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[slava77]

assign reconstruction

[cmsbuild]

New categories assigned: reconstruction

@slava77,@perrotta you have been requested to review this Pull request/Issue and eventually sign? Thanks

[jpata]

type btv