GitLab

Now that we have a website that accepts patches on the list, the
main project should make it easier to find information about that
process.
Signed-off-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Reviewed-by: Fam Zheng <famz@redhat.com>