vitrage-tempest-plugin 2.1.0 release

meta:version: 2.1.0
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: I1b185ac76104a033c706bcc2cf52578f25919c16
meta:release:Code-Review+2: Sean McGinnis <sean.mcginnis@gmail.com>
meta:release:Code-Review+2: Jean-Philippe Evrard <jean-philippe@evrard.me>
meta:release:Workflow+1: Sean McGinnis <sean.mcginnis@gmail.com>