Cache things in vagrant base image.
+x
Update main Vagrantfile with version.
Reorder dependencies in base Vagrantfile and rpm spec.

Making them match the order of `setup.py` makes it easier to verify that they are
complete.
Add some more [dev] dependencies to the image.
Address review comments.
Shorter line.
Add some hints about testing locally.
Sketch of #18.
initial SSH configuration on flocker-deploy
added test for successful SSH configuration and output of authorized_keys file
little cleanup on now redundant code
Rewrap. Remove unused imports
Remove unused imports
whitespace cleanup
whitespace cleanup
rewrap
An assertion that the public key has been copied to authorized_keys
Refactor the ssh configuration into a separate private method.
Refactor the SSH agent start / stop code into a shared test helper