XCP host plugin on Ubuntu server 12.04 dom0

[Edison Su]

Hi All,
>From 
>http://blog.xen.org/index.php/2012/05/06/xcp-in-ubuntu-server-12-04-lts-%E2%80%9Capt-get-install-xcp-xapi%E2%80%9C/,
> it says "host plugins" does work. Question is how to use it?
In the Xenserver, the plugin code is put under /etc/xapi.d/plugins. But on 
Ubuntu 12.04, I can't find this folder.