Users in service group should not have email addresses

Change-Id: Ieed9dffce5cf1e735e482dd3494ac1e103b50955
Closes-Bug: 1185201
Signed-off-by: Gael Chamoulaud <gchamoul@redhat.com>
diff --git a/lib/ironic b/lib/ironic
index ef136bc..08ac278 100644
--- a/lib/ironic
+++ b/lib/ironic
@@ -221,7 +221,7 @@
         # Get ironic user if exists
 
         IRONIC_USER=$(get_or_create_user "ironic" \
-            "$SERVICE_PASSWORD" $SERVICE_TENANT "ironic@example.com")
+            "$SERVICE_PASSWORD" $SERVICE_TENANT)
         get_or_add_user_role $ADMIN_ROLE $IRONIC_USER $SERVICE_TENANT
 
         if [[ "$KEYSTONE_CATALOG_BACKEND" = 'sql' ]]; then