Add back imports of units as they are used when specialConfiguration strings...

Add back imports of units as they are used when specialConfiguration strings are evaluated - fixes ATLASSIM-4663

Simulation/G4Extensions/Charginos/python/CharginosConfig.py

@@ -3,7 +3,8 @@
 from AthenaCommon import CfgMgr
 def getCharginosPhysicsTool(name="CharginosPhysicsTool", **kwargs):
     from G4AtlasApps.SimFlags import simFlags
-    from AthenaCommon.SystemOfUnits import MeV,ns
+    from AthenaCommon.SystemOfUnits import MeV, ns, GeV # noqa: F401
+    # Example specialConfiguration: {'AMSBC1Mass': '1200.16*GeV', 'AMSBN1Mass': '1200.0*GeV', 'AMSBC1Lifetime': '0.2*ns'}
     C1Mass = eval(simFlags.specialConfiguration.get_Value().get("AMSBC1Mass", None))
     N1Mass = eval(simFlags.specialConfiguration.get_Value().get("AMSBN1Mass", None))
     C1Lifetime = eval(simFlags.specialConfiguration.get_Value().get("AMSBC1Lifetime", "-1.0"))

Simulation/G4Extensions/Gauginos/python/GauginosConfig.py

@@ -2,7 +2,9 @@
 
 from AthenaCommon import CfgMgr
 def getGauginosPhysicsTool(name="GauginosPhysicsTool", **kwargs):
+    from AthenaCommon.SystemOfUnits import GeV,ns # noqa: F401
     from G4AtlasApps.SimFlags import simFlags
+    # Example specialConfiguration {'GMSBSlepton': '100.0*GeV', 'GMSBGravitino': '1e-07*GeV', 'GMSBSleptonTime': '0.01*ns'}
     GMSBNeutralino = eval(simFlags.specialConfiguration.get_Value().get("GMSBNeutralino", "0*GeV"))
     GMSBTime = eval(simFlags.specialConfiguration.get_Value().get("GMSBLifeTime", "0*GeV"))
     kwargs.setdefault("NeutralinoMass",        GMSBNeutralino)

Simulation/G4Extensions/Sleptons/python/SleptonsConfig.py

 # Copyright (C) 2002-2020 CERN for the benefit of the ATLAS collaboration
 
 from AthenaCommon import CfgMgr
+from AthenaCommon.SystemOfUnits import GeV,ns # noqa: F401
+# Example specialConfiguration {'GMSBSlepton': '100.0*GeV', 'GMSBGravitino': '1e-07*GeV', 'GMSBSleptonTime': '0.01*ns'}
 
 """
 Defining default settings for slepton/staus. Possible options are: