Add endpoint for permissions

appengine/swarming/swarming_rpcs.py

Index: appengine/swarming/swarming_rpcs.py
diff --git a/appengine/swarming/swarming_rpcs.py b/appengine/swarming/swarming_rpcs.py
index 6c290eabf170b66a50fa05f919ff28f70da9a78c..7ec0d9f6581b6d4674753764dc2bd170cd0b5fb0 100644
--- a/appengine/swarming/swarming_rpcs.py
+++ b/appengine/swarming/swarming_rpcs.py
@@ -71,6 +71,18 @@ class ServerDetails(messages.Message):
   server_version = messages.StringField(1)
 
 
+class ServerPermissions(messages.Message):
+  """Reports the server version."""
+  can_delete_bot = messages.BooleanField(1)
+  can_terminate_bot = messages.BooleanField(2)
+  can_get_bootstrap_py = messages.BooleanField(3)
+  can_put_bootstrap_py = messages.BooleanField(4)
+  can_get_bot_config_py = messages.BooleanField(5)
+  can_put_bot_config_py = messages.BooleanField(6)
+  can_cancel_task = messages.BooleanField(7)
+  can_get_bootstrap_token = messages.BooleanField(8)
+
+
 class FileContentRequest(messages.Message):
   """Content of a file."""
   content = messages.StringField(1)