make doc/recipes.py supported version 1 and 2

unittests/repo_test_util.py

 # Copyright 2016 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.
 
 """Utilities for testing with real repos (e.g. git)."""
 
 
 import contextlib
 import os
 import shutil
@@ skipping 113 matching lines @@
         'recipe_engine': package_pb2.DepSpec(url="file://"+ROOT_DIR),
       }
       for d in repo_deps[k]:
         deps[d] = package_pb2.DepSpec(
           url=repos[d]['root'],
           branch='master',
           revision=repos[d]['revision'],
         )
 
       repos[k] = self.create_repo(k, package_pb2.Package(
-          api_version=1,
+          api_version=2,
           project_id=k,
           recipes_path='',
           deps=deps,
       ))
     return repos
 
   def updated_package_spec_pb(self, repo, dep_name, dep_revision):
     """Returns package spec for given repo, with specified revision
     for given dependency.
     """
@@ skipping 170 matching lines @@
       message = ' '.join(
         ['update %r recipe_module: ' % name] +
         ['%s(%s)' % t for t in methods.iteritems()]
       )
       return self.commit_in_repo(repo, message)
 
   def reset_repo(self, repo, revision):
     """Resets repo contents to given revision."""
     with in_directory(repo['root']):
       subprocess.check_output(['git', 'reset', '--hard', revision])