tests/sitecustomize.py

test-https: glob error messages more so we pass on Python 2.7.9

Python 2.7.9 cleans up how it stringifies SSL errors, so we have to look only
for the important bit (certificate verify failed) rather than looking for
specific ssl module goop (which is now unstable).

try:
    import coverage
    getattr(coverage, 'process_startup', lambda: None)()
except ImportError:
    pass