container: Set exit code 143 as success

Some applications return 143 when exiting due to SIGTERM

roles/container/vars/main.yaml

@@ -53,6 +53,8 @@ _container_quadlet_unit_options: |
   {% for want in container_wants %}
   Wants={{ want }}
   {% endfor %}
+  [Service]
+  SuccessExitStatus=0 143
 _container_quadlet_auto_start_options: |
   [Service]
   Restart=always