Extend Postgres manifest with new params

manifests/complete-postgres-manifest.yaml

@@ -59,6 +59,11 @@ spec:
   #  uid: "efd12e58-5786-11e8-b5a7-06148230260c"
   #  cluster: "acid-batman"
   #  timestamp: "2017-12-19T12:40:33+01:00" # timezone required (offset relative to UTC, see RFC 3339 section 5.6)
+  
+  # run periodic backups with k8s cron jobs and pg_dumpall
+  # logical_backup:
+  #   enable_logical_backup: true
+  #   logical_backup_schedule: "30 00 * * *"
   maintenanceWindows:
   - 01:00-06:00 #UTC
   - Sat:00:00-04:00