manila-tempest-plugin 0.4.0 release

meta:version: 0.4.0
meta:diff-start: -
meta:series: train
meta:release-type: release
meta:pypi: no
meta:first: yes
meta:release:Author: Jean-Philippe Evrard <jean-philippe@evrard.me>
meta:release:Commit: Jean-Philippe Evrard <jean-philippe@evrard.me>
meta:release:Change-Id: Id2c2df95816ecd9d1092ef93a44d9f46ee0e2312
meta:release:Code-Review+1: Goutham Pacha Ravi <gouthampravi@gmail.com>
meta:release:Code-Review+2: Kendall Nelson <kennelson11@gmail.com>
meta:release:Code-Review+2: Thierry Carrez <thierry@openstack.org>
meta:release:Workflow+1: Thierry Carrez <thierry@openstack.org>