object-storage: final removal of ufo code

See https://git.gluster.org/gluster-swift.git for the new location of
the Gluster-Swift code.

With this patch, no OpenStack Swift related RPMs are constructed.

This patch also removes the unused code that references the
user.ufo-test xattr key in the DHT translator.

Change-Id: I2da32642cbd777737a41c5f9f6d33f059c85a2c1
BUG: 961902 (https://bugzilla.redhat.com/show_bug.cgi?id=961902)
Signed-off-by: Peter Portante <peter.portante@redhat.com>
Reviewed-on: http://review.gluster.org/4970
Reviewed-by: Kaleb KEITHLEY <kkeithle@redhat.com>
Reviewed-by: Luis Pabon <lpabon@redhat.com>
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Anand Avati <avati@redhat.com>