Makes it possible to filter containers by image, using
--filter=ancestor=busybox and get all the container running busybox
image and image based on busybox (to the bottom).
Signed-off-by: Vincent Demeester <vincent@sbr.pm>
Upstream-commit: c1af0ac0820d1385fe2ee65593b0558840395c7b
Component: engine
e191a06015