Part of #7886.
This PR conditionally installs mock in `apache/setup.py` based on setuptools version and python version, when possible. It then updates `apache` tests to use `unittest.mock` when `mock` isn't available.
* Conditionally install mock in apache
* error out on newer python and older setuptools
* error when trying to build wheels with old setuptools
* use unittest.mock when third-party mock isn't available in apache, with no cover and type ignore
* Fix dangerous default argument
* Remove unused imports
* Remove unnecessary comprehension
* Use literal syntax to create data structure
* Use literal syntax instead of function calls to create data structure
Co-authored-by: deepsource-autofix[bot] <62050782+deepsource-autofix[bot]@users.noreply.github.com>
