nova 12.0.5 release

meta:version: 12.0.5
meta:diff-start: -
meta:series: liberty
meta:release-type: release
meta:announce: openstack-announce@lists.openstack.org
meta:pypi: no
meta:first: no
meta:release:Author: Matt Riedemann <mriedem@us.ibm.com>
meta:release:Commit: Matt Riedemann <mriedem@us.ibm.com>
meta:release:Change-Id: I92ef77e790f4eff16624e70921a1b463d52ac55a
meta:release:Code-Review+2: Tony Breeds <tony@bakeyournoodle.com>
meta:release:Code-Review+2: Davanum Srinivas (dims) <davanum@gmail.com>
meta:release:Workflow+1: Davanum Srinivas (dims) <davanum@gmail.com>
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