LumiBlockComps+RecExCommon+TriggerTest: MuWriter fixes

• LumiBlockMuWriter allows the input conditions handle key to be empty. In that case, it will write the decorations as 0. LumiBlockMuWriter is enabled for cosmic runs as well, with this configuration.

• If the decorations already exist, they won't be overwritten.

• If both online and mc are enabled, mc takes precedence.

• Enable LumiBlockMuWriter for cosmic runs.

• One trigger test needs to explicitly configure LumiBlockMuWriter.

See ATR-21360.

LumiBlock/LumiBlockComps/python/LumiBlockMuWriterConfig.py

+# Copyright (C) 2002-2020 CERN for the benefit of the ATLAS collaboration
+#
+# File: LumiBlockComps/python/LumiBlockMuWriterConfig.py
+# Created: May 2020, sss
+# Purpose: Configure LumiBlockMuWriter.
+#
+
+
+from AthenaConfiguration.ComponentFactory import CompFactory
+from AthenaConfiguration.ComponentAccumulator import ComponentAccumulator
+
+
+def LumiBlockMuWriterCfg (configFlags, name = 'LumiBlockMuWriter'):
+    result = ComponentAccumulator()
+
+    if configFlags.Beam.Type == 'cosmics':
+        condkey = ''
+    else:
+        from LumiBlockComps.LuminosityCondAlgConfig import LuminosityCondAlgCfg
+        result.merge (LuminosityCondAlgCfg (configFlags))
+        condkey = result.getCondAlgo ('LuminosityCondAlg').LuminosityOutputKey
+
+    LumiBlockMuWriter = CompFactory.LumiBlockMuWriter # LumiBlockComps
+    alg = LumiBlockMuWriter (name, LumiDataKey = condkey)
+    result.addCondAlgo (alg)
+    return result
+
+
+if __name__ == "__main__":
+    from AthenaCommon.Configurable import Configurable
+    Configurable.configurableRun3Behavior=1
+    from AthenaConfiguration.AllConfigFlags import ConfigFlags
+    from AthenaConfiguration.TestDefaults import defaultTestFiles
+    ConfigFlags.loadAllDynamicFlags()
+
+    print ('--- collisions')
+    flags1 = ConfigFlags.clone()
+    flags1.Input.Files = defaultTestFiles.RAW
+    flags1.lock()
+    acc1 = LumiBlockMuWriterCfg (flags1)
+    acc1.printCondAlgs (summariseProps=True)
+    acc1.wasMerged()
+
+    print ('--- cosmics')
+    flags2 = ConfigFlags.clone()
+    flags2.Beam.Type = 'cosmics'
+    flags2.lock()
+    acc2 = LumiBlockMuWriterCfg (flags2)
+    acc2.printCondAlgs (summariseProps=True)
+    acc2.wasMerged()