Fix unit-tests failing in master branch

Unit tests failed as upstream swift was updated with this commit:
f0c0855ec8207fa8be63ed4f3135c8e29a31acc0

Updated gluster-swift unit tests accordingly.

Change-Id: I286c807a17d79c2d9a21ee436f029a0f59cb9b7b
Signed-off-by: Prashanth Pai <ppai@redhat.com>
Reviewed-on: http://review.gluster.org/6268
Reviewed-by: Peter Portante <pportant@redhat.com>
Reviewed-by: Luis Pabon <lpabon@redhat.com>
Tested-by: Luis Pabon <lpabon@redhat.com>
Rebase to OpenStack Swift v1.10.0.172.g9fe7748

* Updated Proxy unit test
* Updated Functional tests
* Updated Tox to point to the new swift snapshot available
  on http://launchpad.net/gluster-swift

Change-Id: Ia91593c6a28d5a3fe70715ddc60546931ae71635
Signed-off-by: Luis Pabon <lpabon@redhat.com>
Reviewed-on: http://review.gluster.org/6445
Bump to version 1.10.2

Change-Id: Ie92d8a8a692e5a9f618d58fefa69e0d90baae200
Signed-off-by: Luis Pabon <lpabon@redhat.com>
Reviewed-on: http://review.gluster.org/6446