Use tempfile to place the temporary files

[zlsh80826]

PR types

Bug fixes

PR changes

Others

Describe

1. Both test_resnet and test_build_strategy use inference directory and resnet.dygraph.params as temporary files, it may cause file race if we running both unit test simultaneously. This PR use tempfile to store those temporary files.
2. Warp helper functions in test_resnet.py for test_build_strategy.py to use.
3. Use tempfile for test_bert and test_transformer
4. Use tempfile for test_dataset and test_dataset_consistency_inspection.py, which may cause overwriten on test_run_with_dump_a.txt

[paddle-bot-old]

你的PR提交成功，感谢你对开源项目的贡献!
请关注后续CI自动化测试结果，详情请参考Paddle-CI手册。
Your PR has been submitted. Thanks for your contribution!
Please wait for the result of CI firstly. See Paddle CI Manual for details.

[Aurelius84]

LGTM