Merge branch 'fix-after-flags-cleanup' into 'master'

Correct use of flags

See merge request atlas/athena!15123

Trigger/TrigConfiguration/TrigConfigSvc/python/TrigConfigSvcConfig.py

@@ -417,7 +417,7 @@ def TrigConfigSvcCfg( flags ):
     from TrigConfigSvc.TrigConfigSvcConfig import findFileInXMLPATH
 
     l1ConfigSvc = TrigConf__LVL1ConfigSvc( "LVL1ConfigSvc" )
-    l1XMLFile = findFileInXMLPATH(flags.get("Trigger.LVL1ConfigFile"))
+    l1XMLFile = findFileInXMLPATH(flags.Trigger.LVL1ConfigFile)
     log.debug( "LVL1ConfigSvc input file:"+l1XMLFile  )
 
     l1ConfigSvc.XMLMenuFile = l1XMLFile