test/smoke: add/get artifact test changes...
test/smoke: add/get artifact test changes...

- Frustratingly there is no easy way to run an assertion that
  the artifact stored is the one sent, as we do not record the
  docker name sent only its digest.
- It should be possible to get the digest here, but moving on
  to more pressing things.

samsalisbury/sous,samsalisbury/sous,opentable/sous,opentable/sous,samsalisbury/sous,opentable/sous,opentable/sous,samsalisbury/sous,samsalisbury/sous,opentable/sous