Merge branch 'AthenaIO_MT_DHdep' into 'master'

Declare AthenaPoolOutputStream as creator of DataHeader

See merge request atlas/athena!36120

Database/AthenaPOOL/OutputStreamAthenaPool/python/CreateOutputStreams.py

@@ -29,6 +29,7 @@ def createOutputStream( streamName, fileName = "", asAlg = False, noTag = False,
       WritingTool = writingTool,
       ItemList    = [ "EventInfo#*" ]
       )
+   outputStream.ExtraOutputs += [("DataHeader", "StoreGateSvc+" + streamName)]
    #outputStream.ItemList += [ "xAOD::EventInfo#*" ]
    outputStream.MetadataStore = svcMgr.MetaDataStore
    outputStream.MetadataItemList = [ "EventStreamInfo#" + streamName, "IOVMetaDataContainer#*" ]

Database/AthenaPOOL/OutputStreamAthenaPool/python/OutputStreamConfig.py

@@ -45,6 +45,7 @@ def OutputStreamCfg(configFlags, streamName, ItemList=[], disableEventTag=False
       OutputFile = fileName,
       HelperTools = [ streamInfoTool, tct ],
       )
+   outputStream.ExtraOutputs += [("DataHeader", "StoreGateSvc+" + streamName)]
    result.addService(StoreGateSvc("MetaDataStore"))
    outputStream.MetadataStore = result.getService("MetaDataStore")
    outputStream.MetadataItemList = [ "EventStreamInfo#Stream" + streamName, "IOVMetaDataContainer#*" ]