k8s: write out the defaulted fields so apply reports InfluxDB unchanged

The NetworkPolicy port gets protocol: TCP, the StatefulSet's volume
claim template apiVersion, kind and volumeMode: Filesystem. Kubernetes
filled these in itself, so every apply -k sent a patch and printed
"configured" although kubectl diff was empty. Validated offline.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01LhzAVaUyqcw5PkGjz4mWW6

k8s/influxdb.yaml

@@ -84,11 +84,16 @@ spec:
       volumes:
         - name: config
           emptyDir: {}
+  # apiVersion, kind and volumeMode are the values Kubernetes fills in itself: written out, a
+  # repeated apply finds nothing to patch (no "configured" for an unchanged StatefulSet).
   volumeClaimTemplates:
-    - metadata:
+    - apiVersion: v1
+      kind: PersistentVolumeClaim
+      metadata:
         name: data
       spec:
         accessModes: ["ReadWriteOnce"]
+        volumeMode: Filesystem
         # No storageClassName: the cluster's default class is used.
         resources:
           requests:
@@ -132,3 +137,4 @@ spec:
               app.kubernetes.io/name: grafana
       ports:
         - port: 8086
+          protocol: TCP