:memo: :bug: Add IF NOT EXISTS
:memo: :bug: Add IF NOT EXISTS

Without that clause, the script would always fail, and the existance of the
extension would become an ERROR instead of a NOTICE, so it would be always
logged.

Tecnativa/docker-odoo-base,PCatinean/docker-odoo-base,Tecnativa/docker-odoo-base,PCatinean/docker-odoo-base