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/glance b/lib/glance
index 475bb48..92577d9 100644
--- a/lib/glance
+++ b/lib/glance
@@ -166,7 +166,7 @@
     if is_service_enabled g-api; then
 
         GLANCE_USER=$(get_or_create_user "glance" \
-            "$SERVICE_PASSWORD" $SERVICE_TENANT_NAME "glance@example.com")
+            "$SERVICE_PASSWORD" $SERVICE_TENANT_NAME)
         get_or_add_user_role service $GLANCE_USER $SERVICE_TENANT_NAME
 
         # required for swift access