Code review comment for lp:~javier.collado/utah/bug1068664

We also install ssh keys under the root user, so we can call the run method of the machine class with root=True to use root instead of using sudo. I think we'd just need to make that change in run.py on line 43. That would mean we wouldn't need to rewrite the password either, since we don't need the password for that. At some point I'd like to move to using an encypted password in the default or rewritten preseed, but I haven't worked on that in a while since it hasn't been high priority.