Set fiber_contract_code to pack mobile ticket
CHANGELOG:
### Added
- [#982](https://git.coopdevs.org/coopdevs/som-connexio/odoo-somconnexio/-/merge_requests/982) Set fiber_contract_code to pack mobile ticket within lead provisioning
Related card: https://trello.com/c/koxbPAvb/1552-revisi%C3%B3-proc%C3%A9s-setejar-refer%C3%A8ncia-fibra-a-tiquet-m%C3%B2bil
Edited by Gerard Funosas