Move engine-api client package

This moves the engine-api client package to `/docker/docker/client`.

Signed-off-by: Michael Crosby <crosbymichael@gmail.com>

container_update.go

@@ -0,0 +1,23 @@
+package client
+
+import (
+	"encoding/json"
+
+	"github.com/docker/docker/api/types"
+	"github.com/docker/docker/api/types/container"
+	"golang.org/x/net/context"
+)
+
+// ContainerUpdate updates resources of a container
+func (cli *Client) ContainerUpdate(ctx context.Context, containerID string, updateConfig container.UpdateConfig) (types.ContainerUpdateResponse, error) {
+	var response types.ContainerUpdateResponse
+	serverResp, err := cli.post(ctx, "/containers/"+containerID+"/update", nil, updateConfig, nil)
+	if err != nil {
+		return response, err
+	}
+
+	err = json.NewDecoder(serverResp.body).Decode(&response)
+
+	ensureReaderClosed(serverResp)
+	return response, err
+}