cephrgw: recreate cnpg backup buckets on ec placement (ec migration step 3)

Claude-Session: https://claude.ai/code/session_015ur3i7D2azsMAWTSVABApv

apps/base/netbox/cnpg_backup.yaml

@@ -19,6 +19,21 @@ spec:
   # Keep the RGW user (and thus the keys) if this CR is ever deleted.
   retainOnDelete: true
 ---
+apiVersion: ceph.unkin.net/v1alpha1
+kind: Bucket
+metadata:
+  name: cnpg-netbox
+  namespace: netbox
+spec:
+  placementTarget: ec
+  bucketName: cnpg-netbox
+  ownerRef: cnpg-netbox-backup
+  versioning: false
+  tags:
+    app: netbox
+    purpose: cnpg-backup
+  retainOnDelete: true
+---
 apiVersion: postgresql.cnpg.io/v1
 kind: ScheduledBackup
 metadata: