Heat configuration for the contrail-heat plugin

1. group_vars/all.yml: Add a new variable (enable_heat_opencontrail - defaults to "yes") to
enable/disable the contrail heat plugin.
2. heat.conf.j2: Add contrail specific configurations to heat.conf to enable the
plugin if the knob is enabled

Change-Id: Ib49611932d150fb02677f366e2b9b0815a4e6dd3
Closes-bug: #1714233

kolla-ansible/ansible/group_vars/all.yml

@@ -13,6 +13,10 @@ enable_nova_compute: "yes"
 # neutron plugin. "no" means pure openstack neutron - without contrail neutron plugin
 enable_neutron_opencontrail: "yes"
 
+# contrail_additions : Ideally leave this to yes if you want the opencontrail
+# heat plugin. "no" means pure openstack heat - without contrail heat plugin
+enable_heat_opencontrail: "yes"
+
 # contrail_additions : IP address where contrail-api is listening on - on an
 # all-in-one, it will be same as kolla_internal_vip_address
 contrail_api_interface_address: "{{ kolla_internal_vip_address }}"

kolla-ansible/ansible/roles/heat/templates/heat.conf.j2

@@ -3,6 +3,10 @@ debug = {{ heat_logging_debug }}
 
 log_dir = /var/log/kolla/heat
 
+{% if enable_heat_opencontrail | bool %}
+plugin_dirs = /usr/lib/python2.7/dist-packages/vnc_api/gen/heat/resources,/usr/lib/python2.7/dist-packages/contrail_heat/resources
+{% endif %}
+
 heat_watch_server_url = {{ public_protocol }}://{{ kolla_external_fqdn }}:{{ heat_api_cfn_port }}
 heat_metadata_server_url = {{ public_protocol }}://{{ kolla_external_fqdn }}:{{ heat_api_cfn_port }}
 heat_waitcondition_server_url = {{ public_protocol }}://{{ kolla_external_fqdn }}:{{ heat_api_cfn_port }}/v1/waitcondition
@@ -89,3 +93,13 @@ driver = noop
 
 [clients]
 endpoint_type = internalURL
+
+{% if enable_heat_opencontrail | bool %}
+[clients_contrail]
+user = admin
+password = {{ keystone_admin_password }}
+tenant = admin
+api_server = {{ contrail_api_interface_address }}
+api_base_url = /
+auth_host_ip = {{ kolla_internal_vip_address }}
+{% endif %}