Set `matrix-dynamic-dns` to `ddclient_identifier`

Signed-off-by: Suguru Hirahara <did🔑z6MkvVZk1A3KBApWJXv2Ju4H14ErDfRGxh8zxdXSZ4vACDg5>

group_vars/matrix_servers

@@ -368,7 +368,7 @@ devture_systemd_service_manager_services_list_auto: |
     +
     ([{'name': 'matrix-dimension.service', 'priority': 4000, 'groups': ['matrix', 'integration-managers', 'dimension']}] if matrix_dimension_enabled else [])
     +
-    ([{'name': 'matrix-dynamic-dns.service', 'priority': 5000, 'groups': ['matrix', 'dynamic-dns']}] if ddclient_enabled else [])
+    ([{'name': (ddclient_identifier + '.service'), 'priority': 5000, 'groups': ['matrix', 'ddclient', 'dynamic-dns']}] if ddclient_enabled else [])
     +
     ([{'name': (etherpad_identifier + '.service'), 'priority': 4000, 'groups': ['matrix', 'etherpad']}] if etherpad_enabled else [])
     +
@@ -3350,6 +3350,8 @@ etherpad_database_postgres_password: "{{ '%s' | format(matrix_homeserver_generic
 
 ddclient_enabled: false
 
+ddclient_identifier: matrix-dynamic-dns
+
 ddclient_docker_image_registry_prefix_upstream: "{{ matrix_container_global_registry_prefix_override if matrix_container_global_registry_prefix_override else ddclient_docker_image_registry_prefix_upstream_default }}"
 
 ddclient_container_network: matrix-dynamic-dns