Rerecord tests.

def rerecord(ctx, rest):
    """Rerecord tests."""
    run('tox -e py27 -- --cassette-mode all --record --credentials {0} -s'
        .format(rest), pty=True)
    run('tox -e py27 -- --resave --scrub --credentials test_credentials {0} -s'
        .format(rest), pty=True)