rt: ensure cookies are set with secure attribute

request-tracker/templates/nginx-rt.j2

@@ -14,6 +14,7 @@ server {
 
 	server_name {{rt_webdomain}};
 	access_log  /var/log/nginx/access.log;
+	proxy_cookie_path / "/; secure; HttpOnly";
 
 	location / {
 		fastcgi_param  QUERY_STRING       $query_string;