Revert "Enable swift by default."

This reverts commit 5a5cbf7274a6a50bb766ec590cf885430ed5c5d0.

This breaks on a default openstack install on Ubuntu 12.10,
revert for now until this can be cleaned up to work out of the
box.

Change-Id: I185509cc30bd28e920cdab60fc92129949bd6b0d