python-ironicclient 1.16.0 release

meta:version: 1.16.0
meta:diff-start: -
meta:series: pike
meta:release-type: release
meta:pypi: yes
meta:first: no
meta:release:Author: Dmitry Tantsur <divius.inside@gmail.com>
meta:release:Commit: Dmitry Tantsur <divius.inside@gmail.com>
meta:release:Change-Id: Ie391ee81dd1dba1041fc5e2c3f65470364e94392
meta:release:Code-Review+2: Thierry Carrez <thierry@openstack.org>
meta:release:Workflow+1: Thierry Carrez <thierry@openstack.org>