swarming: allow privileged users to schedule high priority tasks

appengine/swarming/handlers_endpoints.py

Index: appengine/swarming/handlers_endpoints.py
diff --git a/appengine/swarming/handlers_endpoints.py b/appengine/swarming/handlers_endpoints.py
index a327e07505071ea2671f00782f93ab8d0b6bbf27..cb01352f732b22be6eddef6c2220b30ba632f6ed 100644
--- a/appengine/swarming/handlers_endpoints.py
+++ b/appengine/swarming/handlers_endpoints.py
@@ -343,7 +343,8 @@ class SwarmingTasksService(remote.Service):
       request = message_conversion.new_task_request_from_rpc(
           request, utils.utcnow())
       apply_property_defaults(request.properties)
-      task_request.init_new_request(request, acl.is_bot_or_admin())
+      task_request.init_new_request(
+          request, acl.can_schedule_high_priority_tasks())
     except (datastore_errors.BadValueError, TypeError, ValueError) as e:
       raise endpoints.BadRequestException(e.message)
 
@@ -601,7 +602,7 @@ class SwarmingBotService(remote.Service):
     try:
       # Craft a special priority 0 task to tell the bot to shutdown.
       request = task_request.create_termination_task(
-          bot_id, acl.is_bot_or_admin())
+          bot_id, acl.can_schedule_high_priority_tasks())
     except (datastore_errors.BadValueError, TypeError, ValueError) as e:
       raise endpoints.BadRequestException(e.message)