Move retry and lhttp packages from client/internal to common/.

common/lhttp/client_test.go

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 package lhttp
 
 import (
         "bytes"
         "encoding/json"
         "errors"
         "fmt"
         "io"
         "io/ioutil"
         "net/http"
         "net/http/httptest"
         "testing"
         "time"
 
-        "github.com/luci/luci-go/client/internal/retry"
+        "github.com/luci/luci-go/common/retry"
         "github.com/maruel/ut"
 )
 
 func TestNewRequestGET(t *testing.T) {
         // First call returns HTTP 500, second succeeds.
         serverCalls := 0
         ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
                 serverCalls++
                 content, err := ioutil.ReadAll(r.Body)
                 ut.ExpectEqual(t, nil, err)
@@ skipping 236 matching lines @@
                 defer r.Body.Close()
                 out := handler(r.Body)
                 if out == nil {
                         w.WriteHeader(500)
                 } else {
                         w.Header().Set("Content-Type", jsonContentType)
                         ut.ExpectEqual(t, nil, json.NewEncoder(w).Encode(out))
                 }
         })
 }