chore: disable coredns cache for cluster domain

Ref: kubernetes/kubernetes#128359

Also bring in small changes from upstream CoreDNS config.

Signed-off-by: Noel Georgi <git@frezbo.dev>

Author: frezbo

internal/app/machined/pkg/controllers/k8s/templates/core-dns-template.yaml

@@ -65,9 +65,17 @@ data:
         kubernetes {{ .ClusterDomain }} in-addr.arpa ip6.arpa {
             pods insecure
             fallthrough in-addr.arpa ip6.arpa
+            ttl 30
+        }
+        forward . /etc/resolv.conf {
+           max_concurrent 1000
         }
-        forward . /etc/resolv.conf
         cache 30
+        {{- if .ClusterDomain }} {
+           disable success {{ .ClusterDomain }}
+           disable denial {{ .ClusterDomain }}
+        }
+        {{- end }}
         loop
         reload
         loadbalance