Set apiserver bind address to 0.0.0.0

Change-Id: I70f3126a9c1189366738a5a5d0ac58a585881803
diff --git a/metadata/service/master/cluster.yml b/metadata/service/master/cluster.yml
index aa189f1..cf02e33 100644
--- a/metadata/service/master/cluster.yml
+++ b/metadata/service/master/cluster.yml
@@ -21,6 +21,7 @@
         allow_privileged: True
       apiserver:
         address: ${_param:cluster_local_address}
+        bind_address: 0.0.0.0
         vip_address: ${_param:cluster_vip_address}
         secure_port: 6443
         internal_address: ${_param:kubernetes_internal_api_address}