Add haok@ and wnan@ to BAL OWNERS, due to recent team movements.

Change-Id: I190e0711bc2327e982cd2ecfb7e04e1045812acb
diff --git a/BAL_OWNERS b/BAL_OWNERS
index d56a1d4..ec779e7 100644
--- a/BAL_OWNERS
+++ b/BAL_OWNERS
@@ -2,4 +2,6 @@
 achim@google.com
 topjohnwu@google.com
 lus@google.com
+haok@google.com
+wnan@google.com