Send liniaMobil and dataIniciFacturacio to OTRS
When check order item is OK, we must send the "liniaMobil" DF instead of msisdn. Moreover, we must add the billing start date ("dataIniciFacturacio") which we get from the request body.
With this, OTRS whould be able to create a contract to ODOO right after the UpdateTicketWithProvisioningInfo call.