Filter containers by status.

A continuation of #7616.
Adds `docker ps --filter=status=(restarting|running|paused|stopped)` option.

Docker-DCO-1.1-Signed-off-by: Jessica Frazelle <jess@docker.com> (github: jfrazelle)
Merge pull request #8263 from jfrazelle/filter-status-name

Filter containers by status.