docker stack ls
Signed-off-by: Akihiro Suda <suda.akihiro@lab.ntt.co.jp> Upstream-commit: 5ce08ddfcae5ded73ef0c93c9daba7c916c21ae5 Component: engine
Signed-off-by: Daniel Nephin <dnephin@docker.com> Upstream-commit: 6eefcea51a85d202fcb1e282c6c74b4553743107 Component: engine