[squash] adapt to libpack 0.0.2

Signed-off-by: Solomon Hykes <solomon@docker.com>
Auth system to manage trust in remote refs

Signed-off-by: Solomon Hykes <solomon@docker.com>
Sync the Gordon DB to git notes

Signed-off-by: Solomon Hykes <solomon@docker.com>
Merge branch 'offline' into offline-libpack-0.0.2