vendor: update docker/cli (ab688a9a79a1) and docker/docker (3998dffb806f)

Signed-off-by: Tibor Vass <tibor@docker.com>

vendor/k8s.io/client-go/discovery/round_tripper.go

@@ -1,51 +0,0 @@
-/*
-Copyright 2017 The Kubernetes Authors.
-
-Licensed under the Apache License, Version 2.0 (the "License");
-you may not use this file except in compliance with the License.
-You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing, software
-distributed under the License is distributed on an "AS IS" BASIS,
-WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-See the License for the specific language governing permissions and
-limitations under the License.
-*/
-
-// Package transport provides a round tripper capable of caching HTTP responses.
-package discovery
-
-import (
-	"net/http"
-	"path/filepath"
-
-	"github.com/gregjones/httpcache"
-	"github.com/gregjones/httpcache/diskcache"
-	"github.com/peterbourgon/diskv"
-)
-
-type cacheRoundTripper struct {
-	rt *httpcache.Transport
-}
-
-// newCacheRoundTripper creates a roundtripper that reads the ETag on
-// response headers and send the If-None-Match header on subsequent
-// corresponding requests.
-func newCacheRoundTripper(cacheDir string, rt http.RoundTripper) http.RoundTripper {
-	d := diskv.New(diskv.Options{
-		BasePath: cacheDir,
-		TempDir:  filepath.Join(cacheDir, ".diskv-temp"),
-	})
-	t := httpcache.NewTransport(diskcache.NewWithDiskv(d))
-	t.Transport = rt
-
-	return &cacheRoundTripper{rt: t}
-}
-
-func (rt *cacheRoundTripper) RoundTrip(req *http.Request) (*http.Response, error) {
-	return rt.rt.RoundTrip(req)
-}
-
-func (rt *cacheRoundTripper) WrappedRoundTripper() http.RoundTripper { return rt.rt.Transport }