Replace recipes_test.py with a new parallel expectation-based test runner.

scripts/slave/unittests/recipe_configs_test.py

 #!/usr/bin/python
 # Copyright 2013 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.
 
 """Provides test coverage for common recipe configurations.
 
 recipe config expectations are located in ../recipe_configs_test/*.expected
 
 In training mode, this will loop over every config item in ../recipe_configs.py
@@ skipping 15 matching lines @@
 from slave import recipe_util
 
 import coverage
 
 SCRIPT_PATH = os.path.abspath(os.path.dirname(__file__))
 SLAVE_DIR = os.path.abspath(os.path.join(SCRIPT_PATH, os.pardir))
 
 COVERAGE = (lambda: coverage.coverage(
     include=[os.path.join(x, '*', '*config.py')
              for x in recipe_util.MODULE_DIRS()],
-    data_suffix=True))()
+    data_file='.recipe_configs_test_coverage', data_suffix=True))()
 
 def covered(fn, *args, **kwargs):
   COVERAGE.start()
   try:
     return fn(*args, **kwargs)
   finally:
     COVERAGE.stop()
 
 RECIPE_MODULES = None
 def init_recipe_modules():
@@ skipping 99 matching lines @@
     print 'FATAL: Recipes configs are not at 100% coverage.'
     retcode = 2
 
   test_env.print_coverage_warning()
 
   return retcode
 
 
 if __name__ == '__main__':
   sys.exit(main(sys.argv))