[kayobe] Kayobe 5.0.0 released

Hi,

I'm pleased to announce the release of Kayobe 5.0.0. This release supports deployment of OpenStack Rocky. Lots of new features and fixes, see [1]. Thanks to everyone who contributed. Now onto Stein - we're catching up!

[1] https://kayobe-release-notes.readthedocs.io/en/latest/rocky.html

Mark