Without any special configuration (e.g., in ~/.k5login), we should not
expect the principal alice@REALM to be able to authenticate as bob
against either sshd or a libssh server.
Signed-off-by: Pavol Žáčik <pzacik@redhat.com>
Reviewed-by: Jakub Jelen <jjelen@redhat.com>
(cherry picked from commit 098b427c87)