nginx: return 404 when someone tries to access files or directories that start with a .

nginx/templates/nginx-virthost.j2

@@ -5,6 +5,7 @@ server {
         deny all;
         access_log off;
         log_not_found off;
+        return 404;
     }
 {% if letsencrypt_acme_install %}
 ## Disable .htaccess and other hidden files
@@ -46,6 +47,7 @@ server {
         deny all;
         access_log off;
         log_not_found off;
+        return 404;
     }
     {% if haproxy_ips is defined %}
     # We are behind haproxy