rework postgres storage to single-replica best-effort

manifests/postgres/pvc.yaml

@@ -10,6 +10,36 @@ spec:
   volumeName: pvc-43c3a05b-5556-4d7c-83e3-ee6436f1a48e
   accessModes: ["ReadWriteOnce"]
   storageClassName: longhorn-ssd
+  resources:
+    requests:
+      storage: 10Gi
+
+---
+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  name: postgres-local-pvc
+  namespace: darkdork-dev
+  labels:
+    app: postgres
+spec:
+  accessModes: ["ReadWriteOnce"]
+  storageClassName: longhorn-single-replica-best-effort
+  resources:
+    requests:
+      storage: 15Gi
+
+---
+apiVersion: v1
+kind: PersistenVolumeClaim
+metadata:
+  name: postgres-local-path-test-pvc
+  namespace: darkdork-dev
+  labels:
+    app: postgres
+spec:
+  accessModes: ["ReadWriteOnce"]
+  storageClassName: local-path
   resources:
     requests:
       storage: 10Gi