Configure coordination_url for cloudkitty processor

Cloudkitty processor use tooz to handle multi processor processes.
Otherwise, duplicated billing will be inserted into mysql.

Change-Id: Ifdc1be78afa89499ee4c3bbec5b9db8ddb2929cf
Closes-Bug: #1681160

ansible/roles/cloudkitty/templates/cloudkitty.conf.j2

@@ -49,3 +49,6 @@ auth_section = keystone_authtoken
 [api]
 host_ip = {{ hostvars[inventory_hostname]['ansible_' + api_interface]['ipv4']['address'] }}
 port = {{ cloudkitty_api_port }}
+
+[orchestrator]
+coordination_url = mysql://{{ cloudkitty_database_user }}:{{ cloudkitty_database_password }}@{{ cloudkitty_database_address }}/{{ cloudkitty_database_name }}