Change nginx variable to use in filter of access_log

controllers/nginx/rootfs/etc/nginx/template/nginx.tmpl

@@ -81,7 +81,7 @@ http {
 
     {{/* map urls that should not appear in access.log */}}
     {{/* http://nginx.org/en/docs/http/ngx_http_log_module.html#access_log */}}
-    map $request $loggable {
+    map $request_uri $loggable {
         {{ range $reqUri := $cfg.SkipAccessLogURLs }}
         {{ $reqUri }} 0;{{ end }}
         default 1;