oslo.middleware 4.3.0 release

meta:version: 4.3.0
meta:diff-start: -
meta:series: xena
meta:release-type: release
meta:pypi: yes
meta:first: yes
meta:release:Author: Hervé Beraud <hberaud@redhat.com>
meta:release:Commit: Hervé Beraud <hberaud@redhat.com>
meta:release:Change-Id: If8696416f6e757b8033bff79768dc1f5fe2ae96b
meta:release:Code-Review+2: Elod Illes <elod.illes@est.tech>
meta:release:Code-Review+2: Thierry Carrez <thierry@openstack.org>
meta:release:Workflow+1: Thierry Carrez <thierry@openstack.org>
-----BEGIN PGP SIGNATURE-----

iI8EABYIADcWIQRPTYLdON8aQ97bW9qRN+8OojYVuQUCYPALsxkcaW5mcmEtcm9v
dEBvcGVuc3RhY2sub3JnAAoJEJE37w6iNhW50dkA/AmmC3deUNKHkPfpVjkOmbIR
RwVyx/7eO8z/oQ7qqydxAP9tCZ7gXE2IVhE90lXRjmI0q6Ct39qO6KXqS0mKNF97
Cw==
=7ukY
-----END PGP SIGNATURE-----