Add missing --network for Hookshot

This seems to have been removed by accident.

roles/custom/matrix-bridge-hookshot/templates/systemd/matrix-hookshot.service.j2

@@ -19,6 +19,7 @@ ExecStartPre={{ devture_systemd_docker_base_host_command_docker }} create --rm -
           --log-driver=none \
           --user={{ matrix_user_uid }}:{{ matrix_user_gid }} \
           --cap-drop=ALL \
+		  --network={{ matrix_hookshot_container_network }} \
           --mount type=bind,src={{ matrix_hookshot_base_path }},dst=/data \
           {% for port in matrix_hookshot_container_http_host_bind_ports %}
           -p {{ port }} \