The current gitea master has our change to avoid indexing extra
refs, so we can start replicating refs/changes and refs/notes to
it. It also fixes a bug we observed when viewing the index of
the starlingx/integ repo.
This also switches us back to the upstream repo, though since
we're using an intermediate commit, the version displayed in
the web ui will be "6eb53ac570ab9af51fc9cbd79f1db782edce57e0".
The docker entrypoint script has moved, so the Dockerfile is updated
to reflect that.
Change-Id: I47769fc1ca62a39122d96a1fc0c1bfc2caca6a4f
ead3f63649