change: print the user name if connecting via ssh
this is similar to the message that gitlab produces:
$ ssh -T aur.archlinux.org
Welcome to AUR, gromit! Interactive shell is disabled.
Try `ssh ssh://aur@aur.archlinux.org help` for a list of commands.
$ ssh -T gitlab.archlinux.org
Welcome to GitLab, @gromit!
Signed-off-by: Christian Heusel christian@heusel.eu