fix user_defined quant unittest (#27385)

python/paddle/fluid/contrib/slim/tests/test_user_defined_quantization.py

@@ -48,6 +48,7 @@ def residual_block(img, label, num=1):
             num_filters=ch_out,
             stride=stride,
             padding=padding,
+            use_cudnn=use_cudnn,
             act=None,
             bias_attr=bias_attr)
         return fluid.layers.batch_norm(input=tmp, act=act)