Make sure prometheus-postgres-exporter is connected to the Postgres network (if necessary)

Supersedes https://github.com/spantaleev/matrix-docker-ansible-deploy/pull/3110

group_vars/matrix_servers

@@ -4183,7 +4183,12 @@ prometheus_postgres_exporter_hostname: "{{ matrix_server_fqn_matrix }}"
 
 prometheus_postgres_exporter_container_network: "{{ matrix_monitoring_container_network }}"
 
-prometheus_postgres_exporter_container_additional_networks: "{{ [matrix_playbook_reverse_proxyable_services_additional_network] if matrix_playbook_reverse_proxyable_services_additional_network else [] }}"
+prometheus_postgres_exporter_container_additional_networks: |
+  {{
+    ([devture_postgres_container_network] if (devture_postgres_enabled and prometheus_postgres_exporter_database_hostname == devture_postgres_connection_hostname and prometheus_postgres_exporter_container_network != devture_postgres_container_network) else [])
+    +
+    ([matrix_playbook_reverse_proxyable_services_additional_network] if matrix_playbook_reverse_proxyable_services_additional_network and prometheus_postgres_exporter_container_labels_traefik_enabled else [])
+  }}
 
 prometheus_postgres_exporter_container_labels_traefik_enabled: "{{ matrix_metrics_exposure_enabled }}"
 prometheus_postgres_exporter_container_labels_traefik_docker_network: "{{ matrix_playbook_reverse_proxyable_services_additional_network }}"