Change gae to apache 2 license.

service/datastore/datastore_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 (
         "bytes"
         "fmt"
         "io/ioutil"
         "os"
@@ skipping 1787 matching lines @@
                         if err != nil {
                                 panic(fmt.Errorf("failed to find absolute path for `%s`", sameLevelDir))
                         }
 
                         ids, err := FindAndParseIndexYAML(abs)
                         So(err, ShouldBeNil)
                         So(ids[1].Kind, ShouldEqual, "Test Foo")
                 })
         })
 }