Overview
This story depends on story #12322. It's still not meant for production use at this stage.
When this is implemented one can do git-lfs over ssh or https transparently.
Technical overview
Need to implement a gitolite command git-lfs-authenticate in order to manage
The new command can be written in any language, be deployed in /usr/share/gitolite3/commands and whitelisted in /var/lib/gitolite/.gitolite.rc