keystone 16.0.2 release

meta:version: 16.0.2
meta:diff-start: -
meta:series: train
meta:release-type: release
meta:pypi: no
meta:first: no
meta:release:Author: Kristi Nikolla <kristi@nikolla.me>
meta:release:Commit: Kristi Nikolla <kristi@nikolla.me>
meta:release:Change-Id: I7d1082a517e7b74c28ece8a54c7cc42268144321
meta:release:Code-Review+1: Kristi Nikolla <knikolla@bu.edu>
meta:release:Code-Review+2: Hervé Beraud <herveberaud.pro@gmail.com>
meta:release:Code-Review+2: Thierry Carrez <thierry@openstack.org>
meta:release:Workflow+1: Thierry Carrez <thierry@openstack.org>