modify registry test to only listen on loopback

Signed-off-by: Josh Dolitsky <josh@dolit.ski>

internal/experimental/registry/client_test.go

@@ -87,7 +87,7 @@ func (suite *RegistryClientTestSuite) SetupSuite() {
 	port, err := freeport.GetFreePort()
 	suite.Nil(err, "no error finding free port for test registry")
 	suite.DockerRegistryHost = fmt.Sprintf("localhost:%d", port)
-	config.HTTP.Addr = fmt.Sprintf(":%d", port)
+	config.HTTP.Addr = fmt.Sprintf("127.0.0.1:%d", port)
 	config.HTTP.DrainTimeout = time.Duration(10) * time.Second
 	config.Storage = map[string]configuration.Parameters{"inmemory": map[string]interface{}{}}
 	config.Auth = configuration.Auth{