Follows Rec!3138 (Tests for delta mass functors)

Add tests for PDG_MASS, SIGNED_DELTA_MASS, ABS_DELTA_MASS to AllFunctors.py

DaVinciExamples/python/DaVinciExamples/tupling/AllFunctors.py

@@ -177,6 +177,9 @@ def all_variables(pvs, dtf, mctruth, ptype, candidates=None, ftAlg=None):
 
         all_vars.update({'IS_ABS_ID_pi': F.IS_ABS_ID('pi+')})
         all_vars.update({'IS_ID_pi': F.IS_ID('pi-')})
+        all_vars.update({'PDG_MASS_pi': F.PDG_MASS('pi+')})
+        all_vars.update({'SIGNED_DELTA_MASS_pi': F.SIGNED_DELTA_MASS('pi+')})
+        all_vars.update({'ABS_DELTA_MASS_pi': F.ABS_DELTA_MASS('pi+')})
         all_vars.update({'IS_NOT_H': F.IS_NOT_H})
         all_vars.update({'IS_PHOTON': F.IS_PHOTON})