Code review comment for ~dojordan/cloud-init:azure-preprovisioning

I have a couple comments.
a.) i don't like the use of 'unknown-245'. we really should fix that somewhere centrally, but i wouldnt put that on Douglas to do. We should have something that finds that name and names it more reasonably.

b.) i want to make sure we're not doing multiple dhcp in the *non* provisioning path now.

c.) at some point we can start using the metdata service for data always?

d.) as discussed in #cloud-init http://paste.ubuntu.com/26412425/