rework postgres storage to single-replica best-effort

manifests/darkdork.dev/storageclass.yaml

@@ -2,27 +2,13 @@
 kind: StorageClass
 apiVersion: storage.k8s.io/v1
 metadata:
-  name: longhorn-ssd
+  name: longhorn-single-replica-best-effort
   namespace: darkdork-dev
 provisioner: driver.longhorn.io
 allowVolumeExpansion: true
 parameters:
-  numberOfReplicas: "3"
-  staleReplicaTimeout: "2880" # 48 hours in minutes
+  numberOfReplicas: "1"
+  staleReplicaTimeout: "30"
+  fsType: "ext4"
   fromBackup: ""
-  fsType: "xfs"
-#  backupTargetName: "default"
-#  mkfsParams: "-I 256 -b 4096 -O ^metadata_csum,^64bit"
-#  diskSelector: "ssd,fast"
-#  nodeSelector: "storage,fast"
-#  recurringJobSelector: '[
-#   {
-#     "name":"snap",
-#     "isGroup":true,
-#   },
-#   {
-#     "name":"backup",
-#     "isGroup":false,
-#   }
-#  ]'
----
+  data-locality: "best-effort"