Add test for auth url being set on the Rackspace First gen driver.
Update Rackspace compute drivers to correctly handle "region" argument.
Add tests for "region" argument in the Rackspace compute drivers.
Less copy and pasting in Rackspace test cases.
Add pricing information for Rackspace cloud Sydney region.
Assign region instance variable in the BaseDriver class.
pep8 fixes in test_rackspace.py.
pep8 fixes in libcloud.common.openstack.py.
Update CHANGES.
Update region handling in the CloudFiles driver.