watcher-tempest-plugin 3.6.0 release

meta:version: 3.6.0
meta:team: watcher
meta:diff-start: -
meta:series: gazpacho
meta:branch: master
meta:release-type: release
meta:pypi: no
meta:first: yes
meta:release:Author: Ghanshyam Maan <gmaan@ghanshyammann.com>
meta:release:Commit: Elod Illes <elod.illes@est.tech>
meta:release:Change-Id: I300dd8fa9bdb9ef9a664915650e16996320b88c2
meta:release:Code-Review+2: Thierry Carrez <thierry@openstack.org>
meta:release:Workflow+1: Thierry Carrez <thierry@openstack.org>
meta:release:Code-Review+1: chandan kumar <chkumar@redhat.com>
meta:release:Code-Review+1: Joan Gilabert <jgilaber@redhat.com>
meta:release:Code-Review+2: Elod Illes <elod.illes@est.tech>