random: Add rng device to initial VM creation
random: Add rng device to initial VM creation

Bootstrap the engine VM with rng device.

Change-Id: I465afb3d56c751c8f3adc83b9af6879a2ef2e96f
Bug-Url: https://bugzilla.redhat.com/1357246
Signed-off-by: Simone Tiraboschi <cb03129c66ba4da7ba7044049d0f43907bf857bb@redhat.com>

oVirt/ovirt-hosted-engine-setup,oVirt/ovirt-hosted-engine-setup