Fix test case for when time.tzname[0] is either UTC or GMT.  Also have test output more telling details when there is a failure.
Fix test case for when time.tzname[0] is either UTC or GMT.  Also have test
output more telling details when there is a failure.

sk-/python2.7-type-annotator,sk-/python2.7-type-annotator,sk-/python2.7-type-annotator