Create a KVM box

[nmaludy]

Would be nice if the vagrant box could run in KVM for those of us running Linux.

I know on my host i have to stop KVM to get VirtualBox running.

Here's the snippet in my Vagrantfile that i edit after i clone st2vagrant

    st2.vm.box = "elastic/ubuntu-16.04-x86_64"
    st2.vm.provider :libvirt do |vb|
      vb.host = "#{hostname}"
      vb.memory = 2048
      vb.cpus = 2
      vb.uri = "qemu:///system"
      vb.storage_pool_name = "images"
    end