This is the second script of this test which test bluetooth
dbus APIs. It is a port of bluez/bluez-test from apertis-tests which
was written in python.
It will enumerate the main bluez DBus APIs and check that the expected
properties can be retrieved or set.
It uses set -x and simply returns an error if any command fails.

Signed-off-by: Frédéric Dalleau <frederic.dalleau@collabora.com>