Adding another check for Python 2.7 in Logging `nox -s default`. (#4523)
Adding another check for Python 2.7 in Logging `nox -s default`. (#4523)

See failure:
https://ci.appveyor.com/project/GoogleCloudPlatform/google-cloud-python/build/1.0.2663.master/job/rfi7n10xteq2r4xp
googleapis/python-logging,googleapis/python-logging