[IMP] test_mail: assert_email now allow email_from, not only a partner-based author
[IMP] test_mail: assert_email now allow email_from, not only a partner-based author

Some tests could require it.

ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo