sync roles with changes from OWS

roles/nginx_exporter/templates/sub_status.conf.j2

@@ -0,0 +1,12 @@
+## Managed by Ansible ##
+
+# stub_status module provides access to basic status information
+server {
+   listen unix:{{ nginx_stub_status_socket }};
+   server_name _;
+   access_log off;
+
+   location /stub_status {
+      stub_status;
+   }
+}