Fix k8s-calico DNS

Max nameservers is three, so the k8s/compute role should add only 1
because of reclass deep merging.

Not updating Contrail because DNS is not hardcoded there.
Change-Id: I7a0c39b8cc178b34d73083953504ea52c8f642d8
diff --git a/classes/cluster/virtual-mcp11-k8s-calico-minimal/infra/init.yml b/classes/cluster/virtual-mcp11-k8s-calico-minimal/infra/init.yml
index e102028..6124602 100644
--- a/classes/cluster/virtual-mcp11-k8s-calico-minimal/infra/init.yml
+++ b/classes/cluster/virtual-mcp11-k8s-calico-minimal/infra/init.yml
@@ -24,7 +24,7 @@
       resolv:
         dns:
           - 172.18.176.4
-          - 172.18.176.7
+          - 172.18.208.44
       host:
         cfg01:
           address: ${_param:infra_config_address}