Set ProductionStep in fromRunArgs

Move ProductionStep set to the fromRunArgs functions. FT0 safe.

@jchapman

Simulation/SimuJobTransforms/python/G4AtlasAlg_Skeleton.py

@@ -9,8 +9,6 @@ from SimuJobTransforms.CommonSimulationSteering import CommonSimulationCfg, spec
 def defaultSimulationFlags(ConfigFlags, detectors):
     """Fill default simulation flags"""
     # TODO: how to autoconfigure those
-    from AthenaConfiguration.Enums import ProductionStep
-    ConfigFlags.Common.ProductionStep = ProductionStep.Simulation
     # Writing out CalibrationHits only makes sense if we are running FullG4 simulation without frozen showers
     from SimulationConfig.SimEnums import CalibrationRun, LArParameterization
     if ConfigFlags.Sim.LArParameterization is not LArParameterization.NoFrozenShowers:
@@ -43,6 +41,10 @@ def fromRunArgs(runArgs):
     from SimulationConfig.SimEnums import CalibrationRun, CavernBackground, SimulationFlavour
     commonRunArgsToFlags(runArgs, ConfigFlags)
 
+    # Set ProductionStep
+    from AthenaConfiguration.Enums import ProductionStep
+    ConfigFlags.Common.ProductionStep = ProductionStep.Simulation
+
     # Generate detector list
     from SimuJobTransforms.SimulationHelpers import getDetectorsFromRunArgs
     detectors = getDetectorsFromRunArgs(ConfigFlags, runArgs)