nova 16.1.2 release

meta:version: 16.1.2
meta:diff-start: -
meta:series: pike
meta:release-type: release
meta:pypi: no
meta:first: no
meta:release:Author: melanie witt <melwittt@gmail.com>
meta:release:Commit: melanie witt <melwittt@gmail.com>
meta:release:Change-Id: Ie03aac3ba0716e9b8f10244db707dc13f1a1803f
meta:release:Code-Review+2: Doug Hellmann <doug@doughellmann.com>
meta:release:Code-Review+1: Matt Riedemann <mriedem.os@gmail.com>
meta:release:Code-Review+2: Thierry Carrez <thierry@openstack.org>
meta:release:Workflow+1: Thierry Carrez <thierry@openstack.org>
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