Rename init.update_engine.rc into update_engine.rc.

This follows the current convention for init script naming in Brillo.

Bug: 23186405
Change-Id: If803f6a48bd670a768a6062c88e823c2f81c7ba8
diff --git a/Android.mk b/Android.mk
index 9fb32f6..ba7e392 100644
--- a/Android.mk
+++ b/Android.mk
@@ -209,7 +209,7 @@
     libchromeos-policy
 LOCAL_SRC_FILES := \
     main.cc
-LOCAL_INIT_RC := init.update_engine.rc
+LOCAL_INIT_RC := update_engine.rc
 $(eval $(update_engine_common))
 include $(BUILD_EXECUTABLE)
 
diff --git a/init.update_engine.rc b/update_engine.rc
similarity index 100%
rename from init.update_engine.rc
rename to update_engine.rc