add a PVC that is managed by flux instead of helm (todo: remove original PVC from SSO chart)

flux2/core/base/single-sign-on/pvc-database.yaml

@@ -2,7 +2,7 @@
 apiVersion: v1
 kind: PersistentVolumeClaim
 metadata:
-  name: single-sign-on-database
+  name: stackspin-single-sign-on-database
 spec:
   accessModes:
     - ReadWriteOnce

flux2/core/base/single-sign-on/single-sign-on-values-configmap.yaml

@@ -40,6 +40,8 @@ data:
         backup.velero.io/backup-volumes: "database"
 
     postgresql:
+      persistence:
+        existingClaim: stackspin-single-sign-on-database
       initdbScripts:
         setup.sql: |
           CREATE USER hydra WITH PASSWORD '${hydra_postgresql_password}';