fix missing parameters for openstack_api_project_domain

Change-Id: I97b69178bda2886b2c55313a177ce8b9074949d7
diff --git a/jenkins/client/job/deploy/lab/mk/init.yml b/jenkins/client/job/deploy/lab/mk/init.yml
index bf51197..f847b45 100644
--- a/jenkins/client/job/deploy/lab/mk/init.yml
+++ b/jenkins/client/job/deploy/lab/mk/init.yml
@@ -114,7 +114,7 @@
                 default: "mcp-mk"
               OPENSTACK_API_PROJECT_DOMAIN:
                 type: string
-                default: ""
+                default: "default"
               OPENSTACK_API_PROJECT_ID:
                 type: string
                 default: ""