Add `setUp` and `tearDown` methods to the geographic feed and sitemap tests to...

Add `setUp` and `tearDown` methods to the geographic feed and sitemap tests to ensure `Site` exists for tests.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@15856 bcc190cf-cafb-0310-a4f2-bffc1f526a37