Since libvirt 1.3.4, any RNG (Random Number Generator) device path (that
returns random numbers when read!) is accepted. However, the
recommended source of entropy is `/dev/urandom` (it is non-blocking; and
doesn't have the same limitations of `dev/random`, which is a legacy
interface).
Therefore, make `/dev/urandom` the default RNG for 'rng_dev_path' config
attribute; adjust the relevant tests. Also update the documention to
reflect this change.
Change-Id: Ia39402a045ffb1943463b5741655d84071613e8c
Signed-off-by: Kashyap Chamarthy <kchamart@redhat.com>
Reported-by: Daniel P. Berrangé <berrange@redhat.com>