Bump libcompose and its dependencies

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

@@ -0,0 +1,37 @@
+package client
+
+import (
+	"io"
+	"net/url"
+
+	"golang.org/x/net/context"
+
+	"github.com/docker/distribution/reference"
+	"github.com/docker/engine-api/types"
+)
+
+// ImageImport creates a new image based in the source options.
+// It returns the JSON content in the response body.
+func (cli *Client) ImageImport(ctx context.Context, source types.ImageImportSource, ref string, options types.ImageImportOptions) (io.ReadCloser, error) {
+	if ref != "" {
+		//Check if the given image name can be resolved
+		if _, err := reference.ParseNamed(ref); err != nil {
+			return nil, err
+		}
+	}
+
+	query := url.Values{}
+	query.Set("fromSrc", source.SourceName)
+	query.Set("repo", ref)
+	query.Set("tag", options.Tag)
+	query.Set("message", options.Message)
+	for _, change := range options.Changes {
+		query.Add("changes", change)
+	}
+
+	resp, err := cli.postRaw(ctx, "/images/create", query, source.Source, nil)
+	if err != nil {
+		return nil, err
+	}
+	return resp.body, nil
+}