add seed_generator current and next data in clear:data

lib/tasks/clear_data.rake

@@ -17,6 +17,7 @@ namespace :clear do
     Survey.delete_all
     DiningFacility.update_all(status:'available')
     CashierTerminal.update_all(is_currently_login: 0)
+    SeedGenerator.where("id > 1").update(:current => 0, :next => 0)
     puts "Clear Data Done."
   end
 end