ironic-python-agent-builder 2.4.0 release

meta:version: 2.4.0
meta:diff-start: -
meta:series: independent
meta:release-type: release
meta:pypi: no
meta:first: no
meta:release:Author: Dmitry Tantsur <dtantsur@protonmail.com>
meta:release:Commit: Dmitry Tantsur <dtantsur@protonmail.com>
meta:release:Change-Id: I6a0d18f94e600dcc9e19589184d5971d6a13af47
meta:release:Code-Review+2: Hervé Beraud <hberaud@redhat.com>
meta:release:Code-Review+2: Thierry Carrez <thierry@openstack.org>
meta:release:Workflow+1: Thierry Carrez <thierry@openstack.org>