ironic 9.1.5 release

meta:version: 9.1.5
meta:diff-start: -
meta:series: pike
meta:release-type: release
meta:pypi: no
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: I6396a6dacc48ea614343f2a139eb085d200465eb
meta:release:Code-Review+1: Julia Kreger <juliaashleykreger@gmail.com>
meta:release:Code-Review+2: Sean McGinnis <sean.mcginnis@gmail.com>
meta:release:Code-Review+1: Ivan Kolodyazhny <e0ne@e0ne.info>
meta:release:Code-Review+1: zhongshengping <chdzsp@163.com>
meta:release:Code-Review+1: qingszhao <zhao.daqing@99cloud.net>
meta:release:Workflow+1: Sean McGinnis <sean.mcginnis@gmail.com>