Kedro-viz setup.py requires test_requirements.txt, but it's not packaged in pypi

[cshaley]

Description

Kedro-viz setup.py requires test_requirements.txt, but it's not packaged in pypi

Context

I am trying to package kedro-viz and kedro-airflow for conda-forge so that I can conda install them. Conda-forge runs setup.py as part of the build process. Kedro-viz directly references test_requirements.txt in setup.py, but test_requirements.txt is not packaged in the build for pypi, so running setup.py fails.

Steps to Reproduce

1. Download kedro-viz via pypi.
2. unzip it and run python setup.py.

Expected Result

Setup.py succeeds.

Actual Result

Setup.py fails because test_requirements.txt is missing.

 FileNotFoundError: [Errno 2] No such file or directory: 'test_requirements.txt'

See kedro-airflow Issue 53.

Deprecation references:

pypa/setuptools#1684
pytest-dev/pytest#5534

[tynandebold]

Fixed with #1029