[recipes.py] add missing helpstrings, merge test subcommands into main parser.

recipe_engine/remote.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.
 
 from __future__ import print_function
 
 import contextlib
 import logging
 import os
 import shutil
@@ skipping 15 matching lines @@
     logging.info('Created temporary workdir %s', args.workdir)
 
   try:
     yield
   finally:
     if workdir_tempdir:
       shutil.rmtree(args.workdir, ignore_errors=True)
 
 
 def add_subparser(parser):
+  helpstr = 'Invoke a recipe command from specified repo and revision.'
   remote_p = parser.add_parser(
-      'remote',
-      description='Invoke a recipe command from specified repo and revision')
+      'remote', help=helpstr, description=helpstr)
   remote_p.add_argument(
       '--repository', required=True,
       help='URL of a git repository to fetch')
   remote_p.add_argument(
       '--revision',
       help=(
         'Git commit hash to check out; defaults to latest revision on master'
         ' (refs/heads/master)'
       ))
   remote_p.add_argument(
@@ skipping 29 matching lines @@
         package.InfraRepoConfig().to_recipes_cfg(checkout_dir))
     cmd = [
         sys.executable,
         os.path.join(
             checkout_dir,
             recipes_cfg.read().recipes_path,
             'recipes.py'),
     ] + args.remote_args
     logging.info('Running %r', cmd)
     return subprocess.call(cmd)