Do not copy connection pool after fork
From https://discuss.tryton.org/t/connection-closed-every-couple-of-minutes/1309
When wsgi server uses fork the connection pool should be dropped because they can not be shared between processes.
From https://discuss.tryton.org/t/connection-closed-every-couple-of-minutes/1309
When wsgi server uses fork the connection pool should be dropped because they can not be shared between processes.