IOVDbTestAlg: Turn on noTag when making output streams.

Fixing ATN tests:
Need to turn on noTag option for output streams, to avoid crashes from
EventTagBuilder, since these tests don't make an xAOD::EventInfo object.

AtlasTest/DatabaseTest/IOVDbTestAlg/share/IOVDbTestAlgReadCoolWriteMD.py

@@ -160,7 +160,7 @@ print fullItemList
 
 # Stream's output file
 from AthenaPoolCnvSvc.WriteAthenaPool import AthenaPoolOutputStream
-Stream1 = AthenaPoolOutputStream( "Stream1", "SimpleEventPoolFile.root" )
+Stream1 = AthenaPoolOutputStream( "Stream1", "SimpleEventPoolFile.root", noTag=True )
 # List of DO's to write out
 Stream1.ItemList   += fullItemList