TriggerMenuMT: disable menu DOT files

Disable menu DOT files by default in unit test to save time.

Trigger/TriggerCommon/TriggerMenuMT/scripts/test_menu_CA.py

@@ -19,7 +19,7 @@ JobProperties.jobPropertiesDisallowed = True
 # Set flags
 flags = initConfigFlags()
 runHLT.set_flags(flags)
-flags.Trigger.generateMenuDiagnostics = True
+flags.Trigger.generateMenuDiagnostics = False
 flags.Common.isOnline = True    # online environment
 flags.Input.Files = []          # menu cannot depend on input files