Rearanged the playbook to use ansible roles:

http://docs.ansible.com/ansible/playbooks_roles.html

also made keystone run

roles/keystone/files/keystone.service

@@ -0,0 +1,14 @@
+[Unit]
+Description=Openstack Keystone Container
+After=docker.service
+Requires=docker.service
+ 
+[Service]
+TimeoutStartSec=0
+Restart=always
+ExecStartPre=-/usr/bin/docker stop %n
+ExecStartPre=-/usr/bin/docker rm %n
+ExecStart=/usr/bin/docker run --name %n --add-host="mariadb:172.29.236.13" hpc/keystone
+ 
+[Install]
+WantedBy=multi-user.target