Change gae to apache 2 license.

service/datastore/index_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.
+// Copyright 2015 The LUCI Authors. All rights reserved.
+// Use of this source code is governed under the Apache License, Version 2.0
+// that can be found in the LICENSE file.
 
 // adapted from github.com/golang/appengine/datastore
 
 package datastore
 
 import (
         "fmt"
         "strings"
         "testing"
 
@@ skipping 79 matching lines @@
 
                                         // unmarshal
                                         var ids []*IndexDefinition
                                         yaml.Unmarshal([]byte(strings.Join(tc.yaml, "\n")), &ids)
                                         So(ids[0], ShouldResemble, tc.id)
                                 }
                         })
                 }
         })
 }