Using actual prescales for the photon triggers
I would like to update a change to bring the actual prescale of photon triggers to each event, through a look up table by the run:lumi This pull request include following changes:
- Add method GetPhotonPrescale() to the PhotonPrescale class
- Include the pre-compile prescale maps as .hh files
- only 2016 and 2017 yet, 2018 to be added later (to this pull request)
- the *run2.hh file is a super set of all run2 runs, though the year separated lists are also committed, for future development
- later could be optimized as yaml config files and loaded in the beginning
- Change the prescale method in Main and InstrMET analysis