Purpose is to have a blacklist of email providers on which IAP services should not run. Indeed those are generic mailing providers. Retrieving company information from them makes no sense. Indeed they would be associated to the mailing provider and not to the real company or partner using it. In this commit we define a global domain blacklist in iap and use it in crm_iap_lead_enrich and mail_extension, replacing existing local custom code. Task ID-2322455 PR #64545 Signed-off-by: Thibault Delavallee (tde) <tde@openerp.com>