oslo.config 6.11.3 release

meta:version: 6.11.3
meta:diff-start: -
meta:series: train
meta:release-type: release
meta:pypi: yes
meta:first: no
meta:release:Author: Daniel Bengtsson <dbengt@redhat.com>
meta:release:Commit: Thierry Carrez <thierry@openstack.org>
meta:release:Change-Id: I76191abb0b5914ad73b872ac100427d47d7b8a4d
meta:release:Code-Review+2: Hervé Beraud <hberaud@redhat.com>
meta:release:Code-Review+2: Sean McGinnis <sean.mcginnis@gmail.com>
meta:release:Workflow+1: Thierry Carrez <thierry@openstack.org>