add myself as approver for snapshotter

wackxu · web-flow · commit 3c25a174bd5f · 2018-11-22T17:30:53.000+08:00
diff --git a/OWNERS b/OWNERS
@@ -3,3 +3,4 @@ approvers:
 - lpabon
 - jingxu97
 - xing-yang
+- wackxu
