kill both permanently and transiently bad pixel components in DataMixer

Up to now permanently bad components were killed prior to the DataMixer
and separately for signal and pileup. For pileup this was happening in
the MixingModule in stage 1 premixing and for signal in the MixingModule
in stage 2 premixing. Instead, killing of transiently bad components was
deferred to the last step in the DataMixer where signal and pileup digis
are mixed. With this commit both permanently and transiently bad pixel
components are killed in one place, in the DataMixer. This way premixed
pileup library can be produced even before the list of bad components
has been finalized and can later be reused with different bad component
scenarios.

SimGeneral/MixingModule/python/SiPixelSimParameters_cfi.py

@@ -136,6 +136,7 @@ def _modifyPixelDigitizerForRun3( digitizer ):
     AddNoisyPixels = False,
     AddPixelInefficiency = False, #done in second step
     KillBadFEDChannels = False, #done in second step
+    killModules = False #done in second step
 )
 
 # Threshold in electrons are the Official CRAFT09 numbers:

SimGeneral/MixingModule/python/pixelDigitizer_cfi.py

@@ -20,7 +20,8 @@
 # customization applies only to phase0/1 pixel.
 from Configuration.ProcessModifiers.premix_stage2_cff import premix_stage2
 premix_stage2.toModify(pixelDigitizer,
-    AddPixelInefficiency = False # will be added in DataMixer
+    AddPixelInefficiency = False, # will be added in DataMixer
+    killModules = False # will be added in DataMixer
 )
 
 from SimTracker.SiPhase2Digitizer.phase2TrackerDigitizer_cfi import phase2TrackerDigitizer as _phase2TrackerDigitizer, _premixStage1ModifyDict

SimGeneral/PreMixingModule/python/mixOne_premix_on_sim_cfi.py

@@ -51,7 +51,6 @@
                 # To preserve the behaviour of copy-pasted version of premix worker
                 # All these are done in stage1 (for both signal and pileup)
                 AddNoise = False,
-                killModules = False,
                 MissCalibrate = False,
             ),
             workerType = cms.string("PreMixingSiPixelWorker"),