… and refactor a little bit some daemon on the way.
- Move `SearchRegistryForImages` to a new file (`daemon/search.go`) as
`daemon.go` is getting pretty big.
- `registry.Service` is now an interface (allowing us to decouple it a
little bit and thus unit test easily).
- Add some unit test for `SearchRegistryForImages`.
- Use UniqueExactMatch for search filters
- And use empty restore id for now in client.ContainerStart.
Signed-off-by: Vincent Demeester <vincent@sbr.pm>
