OpenStack Swift proxy controller unit tests

These are a copy of the OpenStack Swift proxy controller
unit tests as of version their 1.9.1.

Change-Id: Ib05bc2a37dbb29d729346d78ea8f6de83b82375b
Signed-off-by: Luis Pabon <lpabon@redhat.com>
Reviewed-on: http://review.gluster.org/5735
Reviewed-by: Peter Portante <pportant@redhat.com>
Tested-by: Peter Portante <pportant@redhat.com>