service: Support additional networks for database

roles/service/tasks/database.yaml

@@ -9,8 +9,7 @@
       - type: volume
         source: "{{ _service_database_name }}"
         destination: /var/lib/postgresql/data
-    container_networks:
-      - "{{ service_name }}"
+    container_networks: "{{ _service_database_networks }}"
     container_secrets:
       - name: "{{ _service_database_name }}"
         target: "{{ service_database_type }}"