- use storage port_read_only attribute if available
- fallback with port if not
related to JIRA https://jira.worldline.com/browse/IGNGPF-1467
Voici la documentation : https://geoplateforme.pages.gpf-tech.ign.fr/documentation
related to JIRA https://jira.worldline.com/browse/IGNGPF-1467