Remove the default project from all users

The default project means that a user gains token scoping information
for a project if they don't specify another. This is something we want
to discourage for user creation. User's should specify there own
authentication scope when they authenticate.

Change-Id: I42c3060d59edfcd44d04cd166bad500419dd99bc
diff --git a/lib/nova b/lib/nova
index 76212ed..c8d0d94 100644
--- a/lib/nova
+++ b/lib/nova
@@ -359,8 +359,7 @@
     # Nova
     if [[ "$ENABLED_SERVICES" =~ "n-api" ]]; then
 
-        local nova_user=$(get_or_create_user "nova" \
-            "$SERVICE_PASSWORD" $service_tenant)
+        local nova_user=$(get_or_create_user "nova" "$SERVICE_PASSWORD")
         get_or_add_user_role $admin_role $nova_user $service_tenant
 
         if [[ "$KEYSTONE_CATALOG_BACKEND" = 'sql' ]]; then