Adding Higgs truth label and get DSID from eventInfo
This MR adds a Higgs truth labeling required for the in situ uncertainties to BoostedJetTaggers. Furthermore the DSID needed to be provided previously to get the correct SF for a couple of Sherpa samples. The DSID is not automatically extracted from eventInfo to avoid that users might forget to set that property.
Tagging @adattagu @tnobe @jveatch @sschramm @cyoung for their information.