Summary:
The getpackv1 protocol doesn't unfortunately support LFS blobs, which is
therefore blocking deploying remotefilelog.fetchpacks on ovrsource on the
clients.
The easiest way to get there was to simply add a getpackv2 API that is similar
in every way to getpackv1, but with the addition of a metadata field. While
full support for this was added to Mercurial, the Mononoke support is the
absolute minimum required as Mononoke doesn't support LFS.
I'm expecting that EdenAPI will completely remove the need for getpackv2 and
therefore for this code should be fairly short-lived.
Reviewed By: farnz
Differential Revision: D15954031
fbshipit-source-id: 465ac13ed8987191ccf9a7cec198d913143aaf13
