Configure barbican access

This adds the barbican section to the nova.conf template so nova can
access the barbican.

Depends-On: openstack-k8s-operators/openstack-operator#562

templates/nova.conf

@@ -263,6 +263,18 @@ cafile = {{ .openstack_cacert }}
 region_name = {{ .openstack_region_name }}
 catalog_info = volumev3:cinderv3:internalURL
 
+[barbican]
+auth_url =  {{ .keystone_internal_url }}
+auth_type = password
+project_domain_name = {{ .default_project_domain }}
+user_domain_name = {{ .default_user_domain}}
+project_name = service
+username = {{ .nova_keystone_user }}
+password = {{ .nova_keystone_password }}
+cafile = {{ .openstack_cacert }}
+region_name = {{ .openstack_region_name }}
+barbican_endpoint_type = internal
+
 [service_user]
 send_service_user_token = true
 auth_url = {{ .keystone_internal_url }}