Fix overwrite check testing the name of the vhost rather than settings dict

nginx/ng/vhosts_config.sls

@@ -94,7 +94,7 @@ nginx_vhost_available_dir:
     - template: jinja
     - context:
         config: {{ settings.config|json() }}
-    {% if 'overwrite' in vhost and vhost.overwrite == False %}
+    {% if 'overwrite' in settings and settings.overwrite == False %}
     - unless:
       - test -e {{ vhost_curpath(vhost) }}
     {% endif %}