test/smoke: explicit docker refs lowercased
test/smoke: explicit docker refs lowercased

- Tests that directly invoke Docker need to use legal docker refs.

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