Update vendor dependencies

Signed-off-by: Emile Vauge <emile@vauge.com>

vendor/github.com/docker/docker/registry/service_v2.go

@@ -1,78 +0,0 @@
-package registry
-
-import (
-	"net/url"
-	"strings"
-
-	"github.com/docker/go-connections/tlsconfig"
-)
-
-func (s *DefaultService) lookupV2Endpoints(hostname string) (endpoints []APIEndpoint, err error) {
-	tlsConfig := tlsconfig.ServerDefault()
-	if hostname == DefaultNamespace || hostname == IndexHostname {
-		// v2 mirrors
-		for _, mirror := range s.config.Mirrors {
-			if !strings.HasPrefix(mirror, "http://") && !strings.HasPrefix(mirror, "https://") {
-				mirror = "https://" + mirror
-			}
-			mirrorURL, err := url.Parse(mirror)
-			if err != nil {
-				return nil, err
-			}
-			mirrorTLSConfig, err := s.tlsConfigForMirror(mirrorURL)
-			if err != nil {
-				return nil, err
-			}
-			endpoints = append(endpoints, APIEndpoint{
-				URL: mirrorURL,
-				// guess mirrors are v2
-				Version:      APIVersion2,
-				Mirror:       true,
-				TrimHostname: true,
-				TLSConfig:    mirrorTLSConfig,
-			})
-		}
-		// v2 registry
-		endpoints = append(endpoints, APIEndpoint{
-			URL:          DefaultV2Registry,
-			Version:      APIVersion2,
-			Official:     true,
-			TrimHostname: true,
-			TLSConfig:    tlsConfig,
-		})
-
-		return endpoints, nil
-	}
-
-	tlsConfig, err = s.tlsConfig(hostname)
-	if err != nil {
-		return nil, err
-	}
-
-	endpoints = []APIEndpoint{
-		{
-			URL: &url.URL{
-				Scheme: "https",
-				Host:   hostname,
-			},
-			Version:      APIVersion2,
-			TrimHostname: true,
-			TLSConfig:    tlsConfig,
-		},
-	}
-
-	if tlsConfig.InsecureSkipVerify {
-		endpoints = append(endpoints, APIEndpoint{
-			URL: &url.URL{
-				Scheme: "http",
-				Host:   hostname,
-			},
-			Version:      APIVersion2,
-			TrimHostname: true,
-			// used to check if supposed to be secure via InsecureSkipVerify
-			TLSConfig: tlsConfig,
-		})
-	}
-
-	return endpoints, nil
-}