The docker provider now uses docker/engine-api and
vdemeester/docker-events instead of fsouza-dockerclient.
Signed-off-by: Vincent Demeester <vincent@sbr.pm>
- Add a `baseProvider` struct with common
- Refactor docker, kv(s) and marathon providers (spliting into small pieces)
- Add unit tests
Signed-off-by: Vincent Demeester <vincent@sbr.pm>