Fix some bugs caused by set functions of the Pass class. test=develop

Author: wzzju

python/paddle/fluid/tests/unittests/test_dist_base.py

@@ -123,7 +123,7 @@ def run_trainer(self, args):
             pass_builder = build_stra._finalize_strategy_and_create_passes()
             mypass = pass_builder.insert_pass(
                 len(pass_builder.all_passes()) - 2, "multi_batch_merge_pass")
-            mypass.set_int("num_repeats", args.batch_merge_repeat)
+            mypass.set("num_repeats", args.batch_merge_repeat)
 
         if args.update_method == "nccl2":
             build_stra.num_trainers = len(args.endpoints.split(","))

python/paddle/fluid/tests/unittests/test_pass_builder.py

@@ -111,7 +111,7 @@ def test_parallel_testing_with_new_strategy(self):
 
         pass_builder.remove_pass(len(pass_builder.all_passes()) - 1)
         self.assertEqual(origin_len + 1, len(pass_builder.all_passes()))
-        viz_pass.set_str("graph_viz_path", "/tmp/test_viz_pass")
+        viz_pass.set("graph_viz_path", "/tmp/test_viz_pass")
 
         self.check_network_convergence(
             use_cuda=core.is_compiled_with_cuda(),