Kolla Ansible no longer supports appending the content of the EXTRA_OPTS
environment variable to the ansible-playbook command. Kolla Ansible now
supports --check and --diff as explicit CLI arguments, so explicitly
pass them into kolla-ansible.
Closes-Bug: #2123834
Change-Id: Ia91e5539f4338c8209fbe92739bce916c10b2b7a
Signed-off-by: Matt Anson <matta@stackhpc.com>