Allow all auth methods

There is no reason to not allow e.g. an ssh agent or to prevent ade
looking for keys, so drop the restrictions. Also fixes launching the
install job from eclipse as that doesn't seems to pass a user and relies
on ssh key authentication.

Signed-off-by: Sjoerd Simons <sjoerd.simons@collabora.co.uk>
Reviewed-by: Emanuele Aina <emanuele.aina@collabora.com>
Differential Revision: https://phabricator.apertis.org/D5344