coredns: add kubernetes plugin

kubernetes/system/coredns/values.yaml

@@ -24,6 +24,12 @@ servers:
           configBlock: lameduck 5s
         - name: ready
         - name: debug
+        - name: kubernetes
+          parameters: cluster.local in-addr.arpa ip6.arpa
+          configBlock: |-
+            pods insecure
+            fallthrough in-addr.arpa ip6.arpa
+            ttl 30
         - name: etcd
           parameters: lan
           configBlock: |-
@@ -32,9 +38,7 @@ servers:
             fallthrough
         - name: file
           parameters: /etc/coredns/zones/lan.zone lan
-          configBlock: |-
-            reload 10s
-            fallthrough
+          configBlock: reload 10s
         - name: cache
           parameters: 30
         - name: loadbalance
@@ -48,27 +52,27 @@ extraVolumes:
       configMap:
         name: coredns-lan-zone
 sops:
-    lastmodified: "2026-05-02T15:23:06Z"
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+    lastmodified: "2026-05-02T15:28:02Z"
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     pgp:
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+        - created_at: "2026-05-02T15:28:01Z"
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