ironic-python-agent 6.3.0 release

meta:version: 6.3.0
meta:diff-start: -
meta:series: victoria
meta:release-type: release
meta:pypi: no
meta:first: no
meta:release:Author: Riccardo Pittau <elfosardo@gmail.com>
meta:release:Commit: Riccardo Pittau <elfosardo@gmail.com>
meta:release:Change-Id: I4bb86870fb7b565983c31d0181527593a4db6e93
meta:release:Code-Review+2: Sean McGinnis <sean.mcginnis@gmail.com>
meta:release:Code-Review+2: Hervé Beraud <hberaud@redhat.com>
meta:release:Code-Review+1: Julia Kreger <juliaashleykreger@gmail.com>
meta:release:Workflow+1: Sean McGinnis <sean.mcginnis@gmail.com>