Added LFS support to SSH
What does this MR do?
Adds the much requested LFS support to SSH. It also allows DeployKeys to download LFS files without having to do anything extra!
HTTP access is still required, since that is what is used to retrieve the LFS data, but authentication happens with the user's SSH Key, so there is no need to input any credentials.
These merge request depends on GitLab Shell being updated with gitlab-shell!86 (merged) .
What are the relevant issue numbers?
Screenshots (if relevant)
