Assign proper provider to new res_users records

When a new user is created in Odoo after a cooperator candidate have paid its first initial share, the provider_id that is assigned to this new user is not the proper one ('admin ce' one). We need to replace it by the correct one ('auth login' on).

added BugSolution label

requested review from @susu105

assigned to @xavier.bonet

approved this merge request

merged