cipd: Refactor client to make it more readable.

go/src/infra/tools/cipd/local/pkgdef_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 cipd
+package local
 
 import (
         "io/ioutil"
         "os"
         "path/filepath"
         "strings"
         "testing"
 
         . "github.com/smartystreets/goconvey/convey"
 )
@@ skipping 235 matching lines @@
                                 "infra/xyz.py",
                         })
 
                         // Separately check symlinks.
                         ensureSymlinkTarget(byName["ENV/abs_in_root"], "dir/def.py")
                         ensureSymlinkTarget(byName["ENV/abs_link"], filepath.ToSlash(filepath.Dir(tempDir)))
                         ensureSymlinkTarget(byName["ENV/rel_link"], "abc.py")
                 })
         })
 }