Update to the alphaT HLT DQM 74X

Updated the alphaT DQM module to make plots for PF and Calo Jets, in line with the inclusion of PF Jets with a Calo prefilter for the alphaT HLT paths. ( /users/aelwood/alphaT/alphaTRun2PF/V6 ).

Associated with PR for 73X:
https://github.com/cms-sw/cmssw/pull/6874