Add EMEC clusters & turn truth info off for data
- added EMEC clusters number
- add to position in bunch train info
- turned off truth to fix a problem in ART: https://bigpanda.cern.ch//media/filebrowser/01fac4f6-d3be-475b-a083-a517276149e8/user.artprod/tarball_PandaJob_4373781780_ANALY_FREIBURG/log.AODtoDAOD Validated that running this patch on the ART file works.
cc: @boeriu
Edited by Douglas Michael Schaefer