* 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
The imports were sorted in May, which broke the monkeypatching in
safe_lxml. I added two tests that the XML parsers are properly patched,
but they didn't pass until I added the monkeypatching to the start of
the test runs. Once that was done, some tests failed because they
relied on specific details of how empty elements are represented. Those
tests are now fixed.
