default vhost on HTTPS redirect

templates/etc/nginx/sites-available/_base.j2

@@ -138,7 +138,7 @@ server {
 #
 server {
 {% for port in __listen %}
-	listen {{ port }};
+	listen {{ port }}{% if nginx_default_vhost == __main_name %} default_server{% endif %};
 {% endfor %}
 	server_name {% if item.name is string %}{{ item.name }}{% else %}{{ item.name | join(' ') }}{% endif %};
 	return 301 https://{{ __main_name }}{% if '443' not in __listen_ssl %}:{{ __listen_ssl[0] }}{% endif %}$request_uri;