Test for PYTHON-91

I run the test on pre-2.1.0b1 reproducing the failure and on the latest build to verify that issue PYTHON-91 is fixed. System used - OSX.
Is there a reason we're creating the keyspace and table in the common setup code? I'm wondering if this should be done in the test class setup, and if we should just create a table in one of these existing keyspaces.