fix bug for sequence_tagging_for_ner in python3, test=develop

fluid/PaddleNLP/sequence_tagging_for_ner/train.py

@@ -30,7 +30,9 @@ def test(exe, chunk_evaluator, inference_program, test_data, test_fetch_list,
         num_infer = np.array(rets[0])
         num_label = np.array(rets[1])
         num_correct = np.array(rets[2])
-        chunk_evaluator.update(num_infer[0], num_label[0], num_correct[0])
+        chunk_evaluator.update(num_infer[0].astype('int64'),
+                               num_label[0].astype('int64'),
+                               num_correct[0].astype('int64'))
     return chunk_evaluator.eval()