Add test-cases/apparmor-pipewire.yaml and revert audio device name change

This test is based on apparmor-pulseaudio.yaml.
pipewire.malicious.expected test will be implemented later.

Revert previous device name change as the latest PipeWire/WirePlumber use same naming as PulseAudio.

Signed-off-by: Frédéric Danis frederic.danis@collabora.com