Extensions had no supported way to call the Engine API.
The configured hosts may be socket-activated or TLS-only TCP.
Add the org.mobyproject.extension.daemon.api.v0 point.
It returns the address of a private unix socket where the daemon serves
its regular API handler.
daemonapiv0.NewClient helper resolves the point and returns a
*client.Client.
Signed-off-by: Paweł Gronowski <pawel.gronowski@docker.com>
Paweł Gronowski
fca6d1f16d