Make sure no rpm scripts fail when installing.

If rpm script fails it can stop the package installations in some cases
and leave broken system. So lets ensure that everything goes smoothly to
the end always.

Signed-off-by: Marko Saukko <marko.saukko@jolla.com>
Make sure user has access to audio as well.

Signed-off-by: Marko Saukko <marko.saukko@jolla.com>