WIP: Fix D-Bus policy

* Non-root users should be able to call only methods providing
  data that are gathered from files readable by non-root users.
* Non-root users are not allowed to call methods changing
  the system (like, Register(), Unregister(), etc.) or obtaining
  sensitive data.

etc-conf/dbus/system.d/com.redhat.RHSM1.conf

@@ -97,3 +97,4 @@
             send_interface="org.freedesktop.DBus.ObjectManager"/>
     </policy>
 </busconfig>
+