Add new ipaddresses hash for issue #343

This is only a part of what is required for #343 to be completed.

- [x] Joyent, OpenStack, Rackspace
- [x] AWS (will add to AWS PR)
- [x] Server-side support
- [x] UI changes to new addresses
- [x] Cluster templates
I took out support for this in the server, think it's safe to remove this line.