Fix nginx config to make non vhost configs default_server

Nginx does not match on the ip as a vhost. This no basically replaces
the commented out section in the nginx.conf

setup/start/nginx/appconfig.ejs

@@ -5,8 +5,12 @@ map $http_upgrade $connection_upgrade {
 }
 
 server {
+<% if (vhost) { %>
     listen       443;
     server_name  <%= vhost %>;
+<% } else { %>
+    listen       443 default_server;
+<% } %>
 
     ssl                  on;
     # paths are relative to prefix and not to this file