Extend resource OWNERS exemption to other res folders (res-product). 

Change-Id: I7a495faf534c4e43eb856da8aa6fe3767b68e77b
diff --git a/OWNERS b/OWNERS
index 6d4f95f..e2ada36 100644
--- a/OWNERS
+++ b/OWNERS
@@ -18,4 +18,4 @@
 yanglu@google.com
 
 # Exempt resource files (because they are in a flat directory and too hard to manage via OWNERS)
-per-file res/**=*
+per-file res*/**=*