Which fails to extract with (older?) p7zip from Linux distributions,
which is used for building online repositories.
Change-Id: Ia9032293841cf192b9b2e0ff820ca4a8b7f47763
Reviewed-by: Patrik Teivonen <patrik.teivonen@qt.io>
Reviewed-by: David Schulz <david.schulz@qt.io>