Add missing options to bash completion for `docker swarm init|update`

Signed-off-by: Harald Albers <github@albersweb.de>
(cherry picked from commit f93da79dc18a989a727978350cca8e941e9daeca)
Signed-off-by: Victor Vieux <vieux@docker.com>

contrib/completion/bash/docker

@@ -2937,6 +2937,13 @@ _docker_swarm_init() {
 			fi
 			return
 			;;
+		--availability)
+			COMPREPLY=( $( compgen -W "active drain pause" -- "$cur" ) )
+			return
+			;;
+		--cert-expiry|--dispatcher-heartbeat|--external-ca|--max-snapshots|--snapshot-interval|--task-history-limit)
+			return
+			;;
 		--listen-addr)
 			if [[ $cur == *: ]] ; then
 				COMPREPLY=( $( compgen -W "2377" -- "${cur##*:}" ) )
@@ -2950,7 +2957,7 @@ _docker_swarm_init() {
 
 	case "$cur" in
 		-*)
-			COMPREPLY=( $( compgen -W "--advertise-addr --force-new-cluster --help --listen-addr" -- "$cur" ) )
+			COMPREPLY=( $( compgen -W "--advertise-addr --autolock --availability --cert-expiry --dispatcher-heartbeat --external-ca --force-new-cluster --help --listen-addr --max-snapshots --snapshot-interval --task-history-limit" -- "$cur" ) )
 			;;
 	esac
 }
@@ -3030,14 +3037,14 @@ _docker_swarm_unlock-key() {
 
 _docker_swarm_update() {
 	case "$prev" in
-		--cert-expiry|--dispatcher-heartbeat|--max-snapshots|--snapshot-interval|--task-history-limit)
+		--cert-expiry|--dispatcher-heartbeat|--external-ca|--max-snapshots|--snapshot-interval|--task-history-limit)
 			return
 			;;
 	esac
 
 	case "$cur" in
 		-*)
-			COMPREPLY=( $( compgen -W "--cert-expiry --dispatcher-heartbeat --help --max-snapshots --snapshot-interval --task-history-limit" -- "$cur" ) )
+			COMPREPLY=( $( compgen -W "--autolock --cert-expiry --dispatcher-heartbeat --external-ca --help --max-snapshots --snapshot-interval --task-history-limit" -- "$cur" ) )
 			;;
 	esac
 }