Fix ironic-api listen address

Set host_ip to internal address for ironic-api service

Change-Id: I001a422a0474e88c1433a7b3ab5e005f2b8c337c
Closes-Bug: #1518336

ansible/roles/ironic/templates/ironic.conf.j2

@@ -4,6 +4,11 @@ verbose = {{ ironic_logging_verbose }}
 
 admin_token = {{ keystone_admin_token }}
 
+{% if service_name == 'ironic-api' %}
+[api]
+host_ip = {{ hostvars[inventory_hostname]['ansible_' + api_interface]['ipv4']['address'] }}
+{% endif %}
+
 [database]
 connection = mysql://{{ ironic_database_user }}:{{ ironic_database_password }}@{{ ironic_database_address }}/{{ ironic_database_name }}