update OWNERS for vts related projects am: c0e744742b
am: 9cade5c147

Change-Id: I3fdf89dd4ab1bdf2bfff80e38a039466e9ceafd7
diff --git a/OWNERS b/OWNERS
index 2f35d7f..b9d65ac 100644
--- a/OWNERS
+++ b/OWNERS
@@ -2,3 +2,4 @@
 wwtbuaa@google.com
 yim@google.com
 yuexima@google.com
+guangzhu@google.com