Fix missing mcChannelNumber in EXOT15
Application of GRL to data events caused mcChannelNumber to disappear. Fix this by checking the SkipTriggerRequirement as for the EXOT15MCThinningTool. Add AntiKt4EMTopoJets_BTagging201810 and BTagging_AntiKt4EMTopo_201810 containers to enable BTagging.
This is for a study to extend the CalRatio analysis to include tops in the final state. Currently being done in R21. Currently there’s no b-tagging information in EXOT15, and when adding it, we found a bug affecting mcChannel, introduced some releases ago.