Add --output option to Swarming client and pass it through to the bot

appengine/swarming/swarming_rpcs.py

 # Copyright 2015 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.
 
 """This module defines ProtoRPC types for the Swarming Server handlers."""
 
 from protorpc import message_types
 from protorpc import messages
 
 
@@ skipping 178 matching lines @@
   cipd_input = messages.MessageField(CipdInput, 10)
   command = messages.StringField(1, repeated=True)
   dimensions = messages.MessageField(StringPair, 2, repeated=True)
   env = messages.MessageField(StringPair, 3, repeated=True)
   execution_timeout_secs = messages.IntegerField(4)
   extra_args = messages.StringField(5, repeated=True)
   grace_period_secs = messages.IntegerField(6)
   idempotent = messages.BooleanField(7)
   inputs_ref = messages.MessageField(FilesRef, 8)
   io_timeout_secs = messages.IntegerField(9)
+  outputs = messages.StringField(12, repeated=True)
 
 
 class NewTaskRequest(messages.Message):
   """Description of a new task request as described by the client."""
   expiration_secs = messages.IntegerField(1)
   name = messages.StringField(2)
   parent_task_id = messages.StringField(3)
   priority = messages.IntegerField(4)
   properties = messages.MessageField(TaskProperties, 5)
   tags = messages.StringField(6, repeated=True)
@@ skipping 332 matching lines @@
 
 
 class DeletedResponse(messages.Message):
   """Indicates whether a bot was deleted."""
   deleted = messages.BooleanField(1)
 
 
 class TerminateResponse(messages.Message):
   """Returns the pseudo taskid to wait for the bot to shut down."""
   task_id = messages.StringField(1)