Fix some Bugs of Undefined Variables

[Jiangxinz]

PR types

Bug fixes

PR changes

Others

Describe

1. In python/paddle/fluid/tests/unittests/asp/test_asp_pruning_1d.py:
   Line 36: Undefined variable 'unittest'
   import unittest
2. In python/paddle/distributed/fleet/launch_utils.py:
   Line 702: Undefined variable 'arg'
   use 'args' instead of 'arg'
   Line 352: Undefined variable 'distutils'
   from distutils.util import strtobool
   Line 688: Undefined variable 'arg'
   use 'args' instead of 'arg'
3. In python/paddle/fluid/tests/unittests/asp/test_asp_pruning_2d_greedy.py:
   Line 36: Undefined variable 'unittest'
   import unittest
4. In python/paddle/fluid/tests/unittests/xpu/test_batch_norm_op_xpu.py:
   Line 144: Undefined variable 'data_layout'
   use 'self.data_layout' instead of 'data_layout'
5. In tools/CrossStackProfiler/NetFileReader.py:
   Line 83: Undefined variable 'multiprocessing'
   import multiprocessing
6. In python/paddle/fluid/tests/unittests/parallel_dygraph_transformer.py:
   Line 915: Undefined variable 'NoamDecay'
   from paddle.optimizer.lr import NoamDecay

[paddle-bot-old]

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[lelelelelez]

LGTM