Cross-platform VLC provides a cmd-line interface for creating media
streams, we use it in QtMultimedia integration tests.
In the future, vlc might be replaced with something more light-weight,
but for now let's just start running the streaming tests at least on
these platform.
Pick-to: 6.5 6.6
Change-Id: I887a98a1ee8f4a9f0a08d16124303bd10fa5a6ba
Reviewed-by: Jøger Hansegård <joger.hansegard@qt.io>
Reviewed-by: Lars Knoll <lars@knoll.priv.no>
