Add 1.27 rc0 documentation (#453)

Reviewed-on: https://gitea.com/gitea/docs/pulls/453
Reviewed-by: Zettat123 <39446+zettat123@noreply.gitea.com>

versioned_docs/version-1.27/administration/git-lfs-support.md

@@ -0,0 +1,43 @@
+---
+date: "2019-10-06T08:00:00+05:00"
+slug: "git-lfs-setup"
+sidebar_position: 12
+aliases:
+  - /en-us/git-lfs-setup
+---
+
+# Git LFS setup
+
+To use Gitea's built-in LFS support, you must update the `app.ini` file:
+
+```ini
+[server]
+; Enables git-lfs support. true or false, default is false.
+LFS_START_SERVER = true
+
+[lfs]
+; Where your lfs files reside, default is data/lfs.
+PATH = /home/gitea/data/lfs
+```
+
+:::note
+LFS server support needs at least Git v2.1.2 installed on the server
+:::
+
+# Git LFS Pure SSH protocol
+
+The LFS Pure SSH protocol supports making LFS connections purely over SSH
+(without having to expose an HTTP endpoint for the Gitea server).
+Support for it can be enabled with the config option `server.LFS_ALLOW_PURE_SSH`:
+
+```ini
+[server]
+LFS_ALLOW_PURE_SSH = true
+```
+
+:::note
+The option is currently set to default false due to an open bug in the `git-lfs`
+client that causes SSH transfers to hang: https://github.com/git-lfs/git-lfs/pull/5816
+This can be worked around on all the client machines by setting the git config:
+`git config --global lfs.ssh.automultiplex false`
+:::