Nowadays there are much, much better UUID implementations to choose
from, such as github.com/google/uuid. Prevent external users from
importing our bespoke implementation so that we can change or migrate
away from it internally without introducing breaking changes.
Signed-off-by: Cory Snider <csnider@mirantis.com>
The UUID generation retries multiple times to read a full UUID, but
preserves any bytes of entropy he successfully managed to read between
retries.
Signed-off-by: Arnaud Porterie <arnaud.porterie@docker.com>
