refactor/reputation: unify the values used (#2462)

* refactor/reputation: unify the values used

* chore/rep: rename Annoy* to Cost*, make duplicate message Cost*Repeated

* fix/reputation: lost and found, convert at the boundary to substrate

* refactor/rep: move conversion to base reputation one level down, left conversions

* fix/rep: order of magnitude adjustments

Thanks pierre!

* remove spaces

* chore/rep: give rationale for order of magnitude

* refactor/rep: move UnifiedReputationChange to separate file

* fix/rep: order of magnitudes correction

polkadot/node/subsystem/src/messages.rs

@@ -25,7 +25,7 @@
 use futures::channel::{mpsc, oneshot};
 use thiserror::Error;
 use polkadot_node_network_protocol::{
-	peer_set::PeerSet, v1 as protocol_v1, ReputationChange, PeerId,
+	peer_set::PeerSet, v1 as protocol_v1, UnifiedReputationChange, PeerId,
 	request_response::{Requests, request::IncomingRequest, v1 as req_res_v1},
 };
 use polkadot_node_primitives::{
@@ -217,7 +217,7 @@ impl CollatorProtocolMessage {
 #[derive(Debug)]
 pub enum NetworkBridgeMessage {
 	/// Report a peer for their actions.
-	ReportPeer(PeerId, ReputationChange),
+	ReportPeer(PeerId, UnifiedReputationChange),
 
 	/// Send a message to one or more peers on the validation peer-set.
 	SendValidationMessage(Vec<PeerId>, protocol_v1::ValidationProtocol),