vitrage-tempest-plugin 2.2.0 release

meta:version: 2.2.0
meta:diff-start: -
meta:series: stein
meta:release-type: release
meta:pypi: no
meta:first: no
meta:release:Author: Ifat Afek <ifat.afek@nokia.com>
meta:release:Commit: Ifat Afek <ifat.afek@nokia.com>
meta:release:Change-Id: Ifb5b51bd1f63c077e1bb975bf1dfc8471b81da49
meta:release:Code-Review+2: Thierry Carrez <thierry@openstack.org>
meta:release:Workflow+1: Thierry Carrez <thierry@openstack.org>