build_library: attach virtio-rng-pci device to QEMU VMs
build_library: attach virtio-rng-pci device to QEMU VMs

Pass /dev/urandom through to QEMU VMs. (Not /dev/random, to avoid
draining the host's entropy.) This speeds initialization of VM entropy.

glevand/coreos--scripts,glevand/coreos--scripts,coreos/scripts,coreos/scripts