MAAS might be catching up, what with adding LXD to the mix. Used to be just KVM hosting, but using an LXD container as a VM host makes this a lot easier for me to run my "kitchen table data center" (four ginormous laptops hooked to a switch). It's got some growing to do, for sure -- like, it would be nice to dump QEMU and just use LXD containers as VMs -- but that's probably in their roadmap. Worth a try if you're into bare-metal stuff.