So OpenShift (or OKD) is just Redhat's Kubernetes platform. If your dev team isn't already in a docker-like workflow, it's going to be a hard sell. I've found many devops-y people love to be able to SSH into the environment to change code as it runs, and that's not possible with an environment like this.
You can spin up KVMs in OpenShift, but I have the feeling it's not going to be quite what you're looking for. I suppose it's all going to be a matter of what workflow is most comfortable for your devops people. If you have an OpenStack install, Vagrant can control those AND they can login and poke around.
Also FYI virt-manager is deprecated in RHEL 8, and is superceded by Cockpit.
Out of curiosity, what feature in the extension pack are you using with Vagrant?
USB pass through support to drive hardware debuggers here.
Re:VirtualBox 6.0 released
by arminiusreturns on Friday December 21, 2018 @08:26PM
(#18738274)
PXE booting mostly.
Of course others are right, virt-manager is probably a better replacement I think.