Add nginx proxy conf for nova-placement

This patch adds metadata to configure nginx proxy site
for nova placement.

Change-Id: I74903d7771bc61982e56a3bafa05338606dc30b2
Related-Prod: PROD-16988
diff --git a/nginx/server/proxy/openstack/placement.yml b/nginx/server/proxy/openstack/placement.yml
new file mode 100644
index 0000000..eda272c
--- /dev/null
+++ b/nginx/server/proxy/openstack/placement.yml
@@ -0,0 +1,22 @@
+parameters:
+  _param:
+    nginx_proxy_openstack_api_host: ${_param:cluster_public_host}
+    nginx_proxy_openstack_api_address: 0.0.0.0
+    nginx_proxy_openstack_placement_host: ${_param:placement_service_host}
+  nginx:
+    server:
+      enabled: true
+      site:
+        nginx_proxy_openstack_api_placement:
+          enabled: true
+          type: nginx_proxy
+          name: openstack_api_placement
+          proxy:
+            host: ${_param:nginx_proxy_openstack_placement_host}
+            port: 8778
+            protocol: http
+          host:
+            name: ${_param:nginx_proxy_openstack_api_host}
+            port: 8778
+            address: ${_param:nginx_proxy_openstack_api_address}
+          ssl: ${_param:nginx_proxy_ssl}