update OWNERS for vts related projects am: 2335f4ef0a am: 00d20da06a
am: b578efc636

Change-Id: I4ffb902ca5ace3dad5d6dfbee028da86dccfdd62
diff --git a/OWNERS b/OWNERS
index 6a26ae7..9aa2549 100644
--- a/OWNERS
+++ b/OWNERS
@@ -1,2 +1,3 @@
 yim@google.com
 zhuoyao@google.com
+guangzhu@google.com