Add links to MP and resolve minor fixes

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 52 matching lines @@
     return True
 
 
 ### Server related.
 
 
 class ServerDetails(messages.Message):
   """Reports details about the server."""
   server_version = messages.StringField(1)
   bot_version = messages.StringField(2)
+  machine_provider_prefix = messages.StringField(3)
+  milo_prefix = messages.StringField(4)
+  sk_revision_prefix = messages.StringField(5)
 
 
 class BootstrapToken(messages.Message):
   """Returns a token to bootstrap a new bot."""
   bootstrap_token = messages.StringField(1)
 
 
 class ClientPermissions(messages.Message):
   """Reports the client's permissions."""
   delete_bot = messages.BooleanField(1)
@@ skipping 434 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)