Before this commit, the mockServer didn't respect the unity specification for many2one fields. When you do a mockWebRead and you want to read other fields than "id" and "display_name" for a many2one field, the mockServeur ignores this part of the specification. The goal of this commit is to ensure that the mockWebRead respects the full specification for many2one fields. closes odoo/odoo#148483 Signed-off-by: Aaron Bohy (aab) <aab@odoo.com>