Before you only had the choice of setting a 03clean apt configuration for either
all hosts, or every single host. Setting it to have the recommended settings for
vservers for all hosts meant that you were setting it for non-vservers as well
as vservers. The other option you had was to set it per host. This was a bit
annoying if you have any more than one vserver because you would need to create
a 03clean for every single vserver guest.
This change auto-detects if the node is a vserver, and if it is it automatically
installs the 03clean_vserver file, with the recommended DSelect::Clean settings,
and allows you to override this for all of your vservers, or for specific hosts.
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