prevent pollution of top level 'test' namespace in site-packages

[asottile]

Description of proposed changes

the ./test directory was leaking into site-packages due to a misconfigured call to find_packages

Related issue(s)

Test plan

before:

$ git clean -fxfd >& /dev/null && python setup.py bdist_wheel >& /dev/null && unzip -l dist/*.whl | grep test
        0  2021-08-20 14:00   test/__init__.py
        0  2021-08-20 14:00   test/augmentation/__init__.py
        0  2021-08-20 14:00   test/augmentation/apply/__init__.py
    11665  2021-08-20 14:00   test/augmentation/apply/test_tf_applier.py
        0  2021-08-20 14:00   test/augmentation/policy/__init__.py
      693  2021-08-20 14:00   test/augmentation/policy/test_core.py
      907  2021-08-20 14:00   test/augmentation/policy/test_sampling.py
        0  2021-08-20 14:00   test/classification/__init__.py
...

after:

$ git clean -fxfd >& /dev/null && python setup.py bdist_wheel >& /dev/null && unzip -l dist/*.whl | grep test
$

Checklist

Need help on these? Just ask!

• [x] I have read the CONTRIBUTING document.
• [ ] I have updated the documentation accordingly. N/A
• [ ] I have added tests to cover my changes. N/A
• [ ] I have run tox -e complex and/or tox -e spark if appropriate. N/A
• [x] All new and existing tests passed.

[bhancock8]

Thanks for the PR!