infra/recipe_autoroller_public: add infra repo

scripts/slave/recipes/infra/recipe_autoroller_public.py

 # Copyright 2016 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.
 
 """Rolls recipes.cfg dependencies for public projects."""
 
 DEPS = [
   'recipe_autoroller',
   'luci_config',
   'recipe_engine/properties',
   'recipe_engine/raw_io',
 ]
 
 from recipe_engine import recipe_api
 
 
 # Toposorted for best results.
 # TODO(phajdan.jr): get the list of public projects from luci-config.
 PROJECTS = [
   'depot_tools',
   'build',
+  'infra',
 ]
 
 
 PROPERTIES = {
   'projects': recipe_api.Property(default=PROJECTS),
 }
 
 
 def RunSteps(api, projects):
   api.recipe_autoroller.prepare_checkout()
@@ skipping 42 matching lines @@
   yield (
       api.test('failed_upload') +
       api.properties(projects=['build']) +
       api.luci_config.get_projects(['build']) +
       api.recipe_autoroller.roll_data('build') +
       api.recipe_autoroller.new_upload('build') +
       api.override_step_data(
           'build.git cl issue',
           api.raw_io.stream_output('Issue number: None (None)'))
   )