Add jooyung to owners

Add jooyung@ to OWNERS list.

Test: no test required
Change-Id: I9bd783cadf7c324f728c1264cb082562db0a7678
diff --git a/OWNERS b/OWNERS
index 6621d68..30fe9a1 100644
--- a/OWNERS
+++ b/OWNERS
@@ -7,3 +7,4 @@
 oth@google.com
 rpl@google.com
 ngeoffray@google.com
+jooyung@google.com
\ No newline at end of file