openstacksdk 0.60.0 release

meta:version: 0.60.0
meta:diff-start: -
meta:series: yoga
meta:release-type: release
meta:pypi: yes
meta:first: yes
meta:release:Author: Elod Illes <elod.illes@est.tech>
meta:release:Commit: Elod Illes <elod.illes@est.tech>
meta:release:Change-Id: Ie037884f278b339b18d3ef250a05454163b066da
meta:release:Code-Review+2: Hervé Beraud <herveberaud.pro@gmail.com>
meta:release:Code-Review+1: Artem Goncharov <artem.goncharov@gmail.com>
meta:release:Code-Review+2: Thierry Carrez <thierry@openstack.org>
meta:release:Workflow+1: Thierry Carrez <thierry@openstack.org>