Make virt1008 a live compute node; make virt1009 the puppet canary.

This is arbitrary -- I want to add a compute node, and it
seems better to keep them contiguous.  Meanwhile, I'm still
keeping an eye on the icinga reporting for broken puppet,
and virt1009 isn't doing anything important so it's safe
to break.

Change-Id: Id444b6d5441ead5cfdbff446fbf5506175dd2cd4