Removed a client's grpc endpoint value. Client's aren't publicly
available so there is no need for a client's gRPC endpoint.
Also changed a node ID's to their public key. A node id's public
address is an issue for mobility of clients as their endpoint
is subject to change
Hashing the interface and using ephmeral ports so that the admin doesn't
choose an interface and port combination. An administrator can alteranatively
decide to provide port but this isn't critical.
