gmetad starts automatically with package install

when you install the package (at least on ubuntu 12.04), it automatically starts the gmetad process, the init script dropped by the recipe makes it impossible to control that original gmetad process from the new init script.

So I just make the package stop the process (if any gets installed) immediately after the install.

alternatives are:
1. use /etc/defaults to control the package installed version starting
2. find the pid file and make the new init script also use it