Revert "Use restartPolicy: Never for kube-dns"

This reverts commit 1a9eed8682.

`restartPolicy: Never` is not allowed for `kind: Deployment`.

Change-Id: I787da93c2693eeb68217110c3b91ea19bc4e9cb0

promenade/templates/genesis/etc/kubernetes/armada-loader/assets/promenade-armada.yaml

@@ -56,7 +56,6 @@ data:
   values:
     kube_dns:
       replicas: 1
-      restartPolicy: Never  # An attempt to work around calico not being ready.
       {%- if config['Network']['dns_servers'] is defined %}
       upstream_nameservers:
       {%- for nameserver in config['Network']['dns_servers'] %}