queue-test: put back timeout

In 93e654061b we removed call to alarm() that served as timeout in this test.
Now when we have test_set_timeout() func, return the timeout back.

Signed-off-by: Marek Chalupa <mchqwerty@gmail.com>
Reviewed-by: Giulio Camuffo <giuliocamuffo@gmail.com>

tests/queue-test.c

@@ -225,6 +225,8 @@ TEST(queue)
 				 dummy_interfaces[i]->version,
 				 NULL, dummy_bind);
 
+	test_set_timeout(2);
+
 	client_create(d, client_test_proxy_destroy);
 	display_run(d);