Update dns settings for k8s-ha-calico

Change-Id: Ib8ed210628ccbe22373c5d38bd89969f1f88d5cc
diff --git a/classes/cluster/k8s-aio-calico/kubernetes/init.yml b/classes/cluster/k8s-aio-calico/kubernetes/init.yml
index 6e46f13..9f15d54 100644
--- a/classes/cluster/k8s-aio-calico/kubernetes/init.yml
+++ b/classes/cluster/k8s-aio-calico/kubernetes/init.yml
@@ -70,6 +70,13 @@
 
   linux:
     network:
+      resolv:
+        domain: k8s-aio-calico.local
+        options:
+          - ndots:5
+          - timeout:2
+          - attempts:4
+      purge_hosts: true
       host:
         ctl01:
           address: ${_param:kubernetes_control_node01_address}