fresh image when receive commit event

Signed-off-by: Xian Chaobo <xianchaobo@huawei.com>

cluster/engine.go

@@ -773,7 +773,7 @@ func (e *Engine) String() string {
 func (e *Engine) handler(ev *dockerclient.Event, _ chan error, args ...interface{}) {
 	// Something changed - refresh our internal state.
 	switch ev.Status {
-	case "pull", "untag", "delete":
+	case "pull", "untag", "delete", "commit":
 		// These events refer to images so there's no need to update
 		// containers.
 		e.RefreshImages()

test/integration/api/images.bats

@@ -68,3 +68,13 @@ function teardown() {
 	[ "${#lines[@]}" -eq 2 ]
 	[[ "${lines[1]}" == *"testimage"* ]]
 }
+
+@test "docker images - after commit on engine side" {
+	start_docker_with_busybox 2
+	swarm_manage
+
+	docker -H ${HOSTS[0]} run -d --name test_container busybox sleep 500
+	docker -H ${HOSTS[0]} commit test_container testimage
+
+	retry 5 1 eval "docker_swarm images | grep 'testimage'"
+}