- Some tests can not work at rpmbuild time, because we can not run
rpmbuild in rpmbuild, and there's no .git/ directory, skip.
- Use 'titodir' below 'srcdir', to not pollute the /tmp/tito dir.
- The test_colors() test requires color-friendly TERM env.
- EL7 is EOL, do not enable tests there.
- Requires us to add pytest.ini to tell pytest where to look for test
files, and set the python path.
- Mock drops terminal from the tested code, so we have to "mock" it in
test_colors()
- Enable coverage in tox tests.
