Updates `image.StoreImage()` to always ensure that images that are installed in Docker have a tarsum.v1 checksum. Docker-DCO-1.1-Signed-off-by: Josh Hawn <josh.hawn@docker.com> (github: jlhawn) Upstream-commit: ba3bad66f92da057dba2a43ff9a512cf7ad72375 Component: engine