[REF] openerp-exception-warning: Change to odoo-exception-warning

[moylop260]

Odoo v16.0 shows the following message:

• https://github.com/odoo/odoo/blob/9ba78dad0ccfda3ec955a39cba1b01e35605923a/odoo/exceptions.py#L131

So, this check is still vigent but for odoo instead of openerp

• Change "openerp" import references to "odoo"