f44006a219
zun help pull usage: zun pull -r <repo> Pull an image. Optional arguments: -r <repo>, --repo <repo> image repo repo is required argument so we can make it positional and can make it like docker: docker pull cirros zun pull cirros Closes-Bug: #1658674 Change-Id: Iabbedc3e52a5c3f4db93eff052029d0fa2afff0e