[Run2_2017] Prepare for Autumn18
Created by: aperloff
This PR is in preparation to run over the Autumn18 samples. The changes are:
- Add the file lists for the Autumn18 samples which are currently finished
- Add the pileup reweighting histogram used for the Autumn18 samples
- Add the Autumn18 scenario
- Update the unit tests to add one for Autumn18
- Add the neff dict for the Autumn18 samples
- Add the HERMIT dictionaries needed for the ntuple production