Allow all users to list service users

Currently only users who can create service user may see the list of
service users while the owner of the users may manage them.

The list shows only owned users so there is no reason why the owners
cannot use the user interface in order to manage the service users.

Change-Id: I03b5137055a416de7ff345a6e34c7653aa25940f
Signed-off-by: Alon Bar-Lev <alon.barlev@gmail.com>
3 files changed