Disable iptables for docker for k8s

Change-Id: Ib7381ba93da747f1dd8d5e2c8c0272e430005a9d
diff --git a/kubernetes/pool/single.yml b/kubernetes/pool/single.yml
index 9be2164..00f22b8 100644
--- a/kubernetes/pool/single.yml
+++ b/kubernetes/pool/single.yml
@@ -16,3 +16,7 @@
       container: false
       network:
         engine: calico
+  docker:
+    host:
+      options:
+        iptables: false