This job is advisory since it is expected that certain patches will fail
the style checks and checkpatch.pl provides no way to mark exceptions to
the rules.

Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20200918132903.1848939-2-berrange@redhat.com>
[thuth: Use "stage: build" to let it run earlier]
Signed-off-by: Thomas Huth <thuth@redhat.com>