Allow the DNS stack to be backward compatible with an old dns_domain (#10630)

Handle all old dns domains:
- for nodelocaldns: in the same server block as the current dns_domain
- for coredns: uffix rewrite of each of the old dns domains to the
  current one

roles/kubernetes-apps/ansible/templates/nodelocaldns-config.yml.j2

@@ -32,7 +32,7 @@ data:
     }
 {% endfor %}
 {% endif %}
-    {{ dns_domain }}:53 {
+    {{ ([dns_domain] + old_dns_domains) | join(' ') }}:53 {
         errors
         cache {
             success 9984 30