Allows ncro instances to discover each other dynamically without static
configuration and enables a peer-to-peer style (hello funny cube) mesh
where nodes share cached builds locally instead of all hitting upstream
caches.
Signed-off-by: NotAShelf <raf@notashelf.dev>
Change-Id: I7d723876c6816cb6aaaf3fe14cb24a426a6a6964
