Finish the pistol grip code

Change-Id: I95c03a95ac0ec64b4314ec310ad6535176b1d529
diff --git a/y2017/control_loops/drivetrain/BUILD b/y2017/control_loops/drivetrain/BUILD
index c44da31..8651320 100644
--- a/y2017/control_loops/drivetrain/BUILD
+++ b/y2017/control_loops/drivetrain/BUILD
@@ -1,6 +1,6 @@
 package(default_visibility = ['//visibility:public'])
 
-load('/aos/build/queues', 'queue_library')
+load('//aos/build:queues.bzl', 'queue_library')
 
 genrule(
   name = 'genrule_drivetrain',