Tweaked a GIS expected test failure.

The test was only checking for geos version 3.0.0, but it failed for all
3.0.x versions. This change makes the version check skip the test for
anything 3.0-ish.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@10381 bcc190cf-cafb-0310-a4f2-bffc1f526a37