Don't tag xqueue since it's on the common cluster.

playbooks/roles/xqueue/tasks/tag_ec2.yml

----
-
-- name: get instance information
-  action: ec2_facts
-
-- name: tag instance
-  ec2_tag: resource={{ ansible_ec2_instance_id }} region={{ ansible_ec2_placement_region }}
-  args:
-    tags:
-      "version:xqueue" : "{{ xqueue_source_repo }} {{ xqueue_checkout.after|truncate(7,True,'') }}"
-  when: xqueue_checkout.after is defined