Fix Issues in Marconi integration

This patch fixes a couple of issues, that prevents marconi from running
on devstack.

Change-Id: I47060a0334ad6f90f1402b34c83bb6ad22f723d4
Closes-Bug: #1260820
diff --git a/exercises/marconi.sh b/exercises/marconi.sh
index 1b9788d..9d83a99 100755
--- a/exercises/marconi.sh
+++ b/exercises/marconi.sh
@@ -35,7 +35,7 @@
 
 is_service_enabled marconi-server || exit 55
 
-curl http://$SERVICE_HOST:8888/v1/ 2>/dev/null | grep -q 'Auth' || die $LINENO "Marconi API not functioning!"
+curl http://$SERVICE_HOST:8888/v1/ 2>/dev/null | grep -q 'queue_name' || die $LINENO "Marconi API not functioning!"
 
 set +o xtrace
 echo "*********************************************************************"