I don't understand why this file needs to be ASCII, or why it was only a
problem recently for one installer, since this has been in this file
since 2014.  But CRI-169 has a stack trace, and it's easy enough to make
the file ASCII.

* Added pytest-json-report plugin
	- modifying app-opts in setup.cfg
	- adding hook to all conftest.py files in repo
	- setting report to be saved to test_root/log/warnings.json
	- Writing custom logic to save json report to avoid overwrite if pytest called twice
This was created to allow us to easily parse through test warnings in jenkins

This directory is placed under .gitignore, so we shouldn't be worried
about pep8 errors in Python files placed there.

Project-root is the default location for these helper files, and they are being
examined as part of pep8 runs. This change will ensure they are ignored in this case.

We do this intentionally, to preserve tracebacks

Uncommenting the pdb=1 line will cause pdb to open on every test
failure, allowing immediate debugging of the failure case

Use setup.cfg to set up default settings when running nose tests. Enable
the rednose library to color test output.