User story: As an installer, I need this to extend the size of RX/TX (packets), so that I can minimize packet loss. Purpose of function: Provide the ability to set RX and TX queue size of guests, either on a guest-by-guest basis, or on a per-virtualisation-host basis, to help performance (to fix performance packet loss): * qemu-kvm-rhev * Libvirt * OpenStack (Nova and/or Neutron) * OSP-d (to facilitate installation with predefined defaults)