Add a vboxclient.service which runs VBoxClient --vwsvga when using the
      VMSVGA virtual GPU, this fixes resizing in wayland sessions (rhbz 1789545)
    Drop VBoxClient --vwsvga-x11 from VBoxClient-all, it is not necessary
      now that we run VBoxClient --vwsvga as service and it was breaking resize
      support with the VBoxSVGA virtual GPU (rhbz 1789545)
    Drop ExecStartPre modprove vboxvideo vboxsf from vboxservice.service,
      this is not necessary, they will be loaded automatically