Flocker deploy 121

I would like this to be looked over by someone, for guidance on what needs to be done, and confirmation I'm on the right track.

And, now, the comment on #121 that some of this might not be necessary for now.

There are a couple of inline "TODO"s I'm not sure about.

Fixes #121 
This makes sense for now.  I think that the package that includes `flocker-deploy` is eventually going to be different from the package that includes `flocker-volume` (you want to install the former on your Windows 8 laptop, you want to install the latter on your Fedora 20 VM).