Add update_engine to media_rw group am: aff17cf208 am: 9b7a677b2c
am: 888037efd0

Change-Id: I23c07ddc355f2bd76a8f498e15a24e06f485d5ec
diff --git a/update_engine.rc b/update_engine.rc
index a7d6235..90ca4c6 100644
--- a/update_engine.rc
+++ b/update_engine.rc
@@ -1,7 +1,7 @@
 service update_engine /system/bin/update_engine --logtostderr --logtofile --foreground
     class late_start
     user root
-    group root system wakelock inet cache
+    group root system wakelock inet cache media_rw
     writepid /dev/cpuset/system-background/tasks
     disabled