Results 3 issues of PaoloYam

This module handles tags management on product variants. This module depends on [product_template_tags]( https://github.com/OCA/product-attribute/tree/16.0/product_template_tags).

Currently, the attachment's name is generated in the user's language. This PR makes the the attachment's name to be generated in the customer language.

approved
ready to merge

Populating role_line_ids this way doesn't work in this case. The previous method indeed return the right value but at creation, role_line_ids is empty in vals resulting of a new user...