added force_sync option to JIO custom properties

data/storages.json

@@ -11,6 +11,7 @@
       "settings": "settings"
     },
     "storage": true,
+    "force_sync": true,
     "force_field_definitions": true,
     "skip_total_records": true
   },
@@ -31,8 +32,7 @@
       }, {
         "type": "local",
         "username": "slapos",
-        "application_name": "items",
-        "yield": true
+        "application_name": "items"
       }]
     }
   }],