Ajouter agent2_ansible au registre + config ansible agent1

- agents_registry.json : ajout de agent2_ansible avec sa spécialité
- ansible/ : configuration de base (ansible.cfg + inventaire template)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

ansible/ansible.cfg

@@ -0,0 +1,11 @@
+[defaults]
+inventory         = /opt/agent/ansible/inventory
+roles_path        = /opt/agent/ansible/roles
+host_key_checking = False
+retry_files_enabled = False
+stdout_callback   = yaml
+timeout           = 60
+
+[privilege_escalation]
+become       = False
+become_method = sudo