[FIX] l10n_fr_certification: can't change module dependancies on stable version

Commit https://github.com/odoo/odoo/commit/2eb344f23b3a9daa8e7c7ddaead145a8b05b39bf changed the dependancies of l10n_fr_certification which is not acceptable on stable. Instead, the method to check is now moved in account module (to avoid duplicated) and it is called by l10n_fr_certification and account_lock module.