disable rbac by default

Change-Id: I1a85fd967099dced0df0335afe3abdb12614c711
diff --git a/metadata/service/master/cluster.yml b/metadata/service/master/cluster.yml
index bba8867..3cb4c03 100644
--- a/metadata/service/master/cluster.yml
+++ b/metadata/service/master/cluster.yml
@@ -20,6 +20,8 @@
         insecure_address: 127.0.0.1
         insecure_port: 8080
         count: 3
+        daemon_opts:
+          anonymous-auth: false
       etcd:
         members:
           - host: ${_param:cluster_node01_address}