os-traits 3.3.0 release

meta:version: 3.3.0
meta:team: nova
meta:diff-start: -
meta:series: independent
meta:branch: master
meta:release-type: release
meta:pypi: yes
meta:first: no
meta:release:Author: René Ribaud <rene.ribaud@gmail.com>
meta:release:Commit: René Ribaud <rene.ribaud@gmail.com>
meta:release:Change-Id: I62df064a9a0db7a0500ac80ee2cbe0f3b373c0dd
meta:release:Code-Review+1: Amit Uniyal <auniyal@redhat.com>
meta:release:Code-Review+1: Balazs Gibizer <gibizer@gmail.com>
meta:release:Code-Review+2: Elod Illes <elod.illes@est.tech>
meta:release:Workflow+1: Thierry Carrez <thierry@openstack.org>
meta:release:Code-Review+2: Thierry Carrez <thierry@openstack.org>