We should avoid erroring with attestations support compatability errors
when a user has specified --provenance=false.
A user may wish to enable --provenance=false that works across buildkit
versions, but currently it will fail on old versions - this patch fixes
this, to silently ignore the provenance flag for this check if it's set
to disabled.
Signed-off-by: Justin Chadwell <me@jedevc.com>
(cherry picked from commit 15a80b56b5)
Signed-off-by: Justin Chadwell <me@jedevc.com>
033d5629c0