Vendor main dependencies.

vendor/github.com/docker/engine-api/client/swarm_leave.go

@@ -0,0 +1,18 @@
+package client
+
+import (
+	"net/url"
+
+	"golang.org/x/net/context"
+)
+
+// SwarmLeave leaves the Swarm.
+func (cli *Client) SwarmLeave(ctx context.Context, force bool) error {
+	query := url.Values{}
+	if force {
+		query.Set("force", "1")
+	}
+	resp, err := cli.post(ctx, "/swarm/leave", query, nil, nil)
+	ensureReaderClosed(resp)
+	return err
+}