Add zsh completion for 'docker service {create --port, update --port-{add,rm}}'
Add zsh completion for 'docker service {create --port, update --port-{add,rm}}'

Signed-off-by: Steve Durrheimer <a2c1a055e5b399822be341b4e663de3cd05cf8f7@gmail.com>

ashfall/cli,e11137/cli,dnephin/cli,thaJeztah/cli,riyazdf/cli,redpanda/cli,dnephin/cli,Zebrilee/cli,docker/cli,allencloud/cli,ashfall/cli,e11137/cli,Zebrilee/cli,cpuguy83/cli,allencloud/cli,cpuguy83/cli,docker/cli,redpanda/cli,riyazdf/cli,thaJeztah/cli