suppress useless debug messages when processing GetManagedObject calls

Signed-off-by: Olaf Kirch <okir@suse.de>
Fix Agent.Filesystem schema to support changes in API

Signed-off-by: Olaf Kirch <okir@suse.de>
dbus config: Add <allow send_destination="org.opensuse.Testbus.Agent*>

Signed-off-by: Olaf Kirch <okir@suse.de>