run update_engine in the background
am: 103cb3dcc4

* commit '103cb3dcc46a2db64e859eb4e493bde20e891398':
  run update_engine in the background
diff --git a/update_engine.rc b/update_engine.rc
index 499a8f6..62bbcc7 100644
--- a/update_engine.rc
+++ b/update_engine.rc
@@ -2,3 +2,4 @@
     class late_start
     user root
     group root system wakelock dbus inet
+    writepid /dev/cpuset/system-background/tasks