Move engine-api client package

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

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

client/container_restart.go

@@ -0,0 +1,22 @@
+package client
+
+import (
+	"net/url"
+	"time"
+
+	timetypes "github.com/docker/docker/api/types/time"
+	"golang.org/x/net/context"
+)
+
+// ContainerRestart stops and starts a container again.
+// It makes the daemon to wait for the container to be up again for
+// a specific amount of time, given the timeout.
+func (cli *Client) ContainerRestart(ctx context.Context, containerID string, timeout *time.Duration) error {
+	query := url.Values{}
+	if timeout != nil {
+		query.Set("t", timetypes.DurationToSecondsString(*timeout))
+	}
+	resp, err := cli.post(ctx, "/containers/"+containerID+"/restart", query, nil, nil)
+	ensureReaderClosed(resp)
+	return err
+}