bash completion for `docker daemon --max-concurrent-{down,up}load`

Signed-off-by: Harald Albers <github@albersweb.de>

contrib/completion/bash/docker

@@ -816,6 +816,8 @@ _docker_daemon() {
 		--label
 		--log-driver
 		--log-opt
+		--max-concurrent-downloads
+		--max-concurrent-uploads
 		--mtu
 		--pidfile -p
 		--registry-mirror