Function configure 

pub fn configure(
    registry: &dyn Registry,
    operator_did: &str,
    grace: Duration,
) -> Arc<OperatorRelation> 

Builds the OperatorRelation a poll needs.

The operator is configuration — a server is launched knowing who runs it, and never discovers that from the network. The claim is read at the server’s own authority as its DID spells it — a development server’s port included — which is the key didbot operate writes and the key refresh_root_standing reads every root’s record at.