Added ubuntu-12.04.2-server-i386 template

I was building a new machine based on the original ubuntu-12.04.1-server-i386 and got a failure to download the iso.  I checked at http://releases.ubuntu.com/ and the only release for 12.04 listed now is 12.04.2 instead of 12.04.1.

I have two things in question.  First, I updated the boot_wait time to 10 seconds because for some reason it was failing to start in time for veewee to start its process.  I can change that back if the 4 seconds is a standard.  I can just maintain that in a personal branch.  Second, I left the ubuntu-12.04.1-server-i386 template.  Since the backing iso is not available on ubuntu's website anymore I can remove that as well if it makes sense to do so in this pull request.