The export command works the same way for most (all?) types. I have
made it generic and moved it into export.go, then ported
{export,create}_auto_image{repository,policy}.go to use it.
Signed-off-by: Michael Bridgen <michael@weave.works>
This adds all the standard subcommands for the ImageRepository type.
Following `source`, I have put them under a namespace: `auto`,
referring to automation.
NB For `create` I use controllerutil.CreateOrUpdate, which looks to me
like a slightly more rounded version of the upsert* funcs.
Signed-off-by: Michael Bridgen <michael@weave.works>
