The final step. Future changes will clean up the remnants of the
novaclient usage. This is a rather large patch, owing to the number of
things that novaclient was handling for us which SDK does not, but the
combination of unit and functional tests mean we should be handling
all of these differences.
Change-Id: I623e8c772235438a3d1590e1bbd832748d6e62ea
Signed-off-by: Stephen Finucane <stephenfin@redhat.com>