ironic-python-agent 5.0.0 release

meta:version: 5.0.0
meta:diff-start: -
meta:series: train
meta:release-type: release
meta:pypi: no
meta:first: no
meta:release:Author: Mark Goddard <mark@stackhpc.com>
meta:release:Commit: Mark Goddard <mark@stackhpc.com>
meta:release:Change-Id: I64eb58d4a17d48a788a505271ac16ed88e4cecf3
meta:release:Code-Review+1: Dmitry Tantsur <dtantsur@protonmail.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>