openstacksdk 0.30.0 release

meta:version: 0.30.0
meta:diff-start: -
meta:series: train
meta:release-type: release
meta:pypi: yes
meta:first: no
meta:release:Author: Monty Taylor <mordred@inaugust.com>
meta:release:Commit: Monty Taylor <mordred@inaugust.com>
meta:release:Change-Id: I196a3d871e3cc104e8a7171ea98d5379b8a089de
meta:release:Code-Review+1: Eric Fried <openstack@fried.cc>
meta:release:Code-Review+2: Tony Breeds <tony@bakeyournoodle.com>
meta:release:Workflow+1: Tony Breeds <tony@bakeyournoodle.com>