Code review comment for lp:~kim0/serverguide/serverguide-review-ch19

I just checked and the server team is pretty confident eucalyptus will not be usable in 11.10, so the advice is pretty much going to be ""Don't upgrade because you're screwed if you do"
I'll add that warning, a link to the help.u.c UEC docs, a link to the natty serverguide and a link to the yet-to-be-written new ubuntu-cloud chapter in a later commit