Updated openstack/openstack
Project: openstack/python-openstackclient  59735bf10da67b1611ae6e6b34f282512b8b63bf

Add cliff-tablib to requirements

cliff-tablib gives cliff the ability to format list and show output in
html, json, or yaml (http://cliff-tablib.readthedocs.org/). This patch
adds cliff-tablib to requirements.txt so that it can be installed along
with cliff.

Change-Id: I4daab97642482e6f40cd8209ff5edd9c680092c0