PROCTools: Toggle --nan-equal while running diff-root in RunTier0Tests.py

FTAG writes out NaNs in certain cases and the standard dictates NaN!=NaN. This now affects the primary AODs in master so we're making --nan-equal the default in RunTier0Test.py.

Closes ATLASRECTS-5722

Tools/PROCTools/python/RunTier0Tests.py

@@ -369,7 +369,7 @@ def RunFrozenTier0PolicyTest(q,inputFormat,maxEvents,CleanRunHeadDir,UniqID,Diff
 
     exclusion_list = ' '.join(exclusion_list)
 
-    comparison_command = "acmd.py diff-root "+clean_dir+"/my"+inputFormat+".pool.root run_"+q+"/my"+inputFormat+".pool.root --error-mode resilient --ignore-leaves "+exclusion_list+" --entries "+str(maxEvents)+" > run_"+q+"/diff-root-"+q+"."+inputFormat+".log 2>&1"
+    comparison_command = "acmd.py diff-root "+clean_dir+"/my"+inputFormat+".pool.root run_"+q+"/my"+inputFormat+".pool.root --nan-equal --error-mode resilient --ignore-leaves "+exclusion_list+" --entries "+str(maxEvents)+" > run_"+q+"/diff-root-"+q+"."+inputFormat+".log 2>&1"
     output,error = subprocess.Popen(['/bin/bash', '-c', comparison_command], stdout=subprocess.PIPE, stderr=subprocess.PIPE).communicate()
     output,error = output.decode('utf-8'), error.decode('utf-8')