Added GN2 FTAG PhysVal variable definition (fix AFT-661)
Follow up to !65311 (merged)
Fix FTAG PhysVal crash
03:35:18 PhysValMonManager FATAL Standard std::exception is caught
03:35:18 PhysValMonManager ERROR var_name GN2v00_pb not in HistogramDefinitions.
FYI @ywng