oslo.service 4.4.0 release

meta:version: 4.4.0
meta:team: oslo
meta:diff-start: -
meta:series: gazpacho
meta:branch: master
meta:release-type: release
meta:pypi: yes
meta:first: yes
meta:release:Author: Elod Illes <elod.illes@est.tech>
meta:release:Commit: Balazs Gibizer <gibizer@gmail.com>
meta:release:Change-Id: I97361e2c648ea6026192d5f47187ec5ef01e2b09
meta:release:Code-Review+2: Thierry Carrez <thierry@openstack.org>
meta:release:Code-Review+2: Elod Illes <elod.illes@est.tech>
meta:release:Code-Review+1: Daniel Bengtsson <dbengt@redhat.com>
meta:release:Workflow+1: Thierry Carrez <thierry@openstack.org>