docker: Store Revision as Version.Meta in cache.
docker: Store Revision as Version.Meta in cache.

- Now we are using semverEqual, the Meta field does not take part
  in comparisons as per the semver spec precedence rules:
  http://semver.org/#spec-item-11

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