Changed the fixtures used to test the 'initial_data' feature so they don't...

Changed the fixtures used to test the 'initial_data' feature so they don't contain datetimes. Refs #17275.


git-svn-id: http://code.djangoproject.com/svn/django/trunk@17154 bcc190cf-cafb-0310-a4f2-bffc1f526a37