allow exchanging of consensus params

node/node.go

@@ -340,6 +340,7 @@ func makeNode(config *cfg.Config,
 		channels[statesync.SnapshotChannel],
 		channels[statesync.ChunkChannel],
 		channels[statesync.LightBlockChannel],
+		channels[statesync.ParamsChannel],
 		peerUpdates,
 		stateStore,
 		blockStore,

node/setup.go

@@ -756,6 +756,7 @@ func makeNodeInfo(
 			byte(statesync.SnapshotChannel),
 			byte(statesync.ChunkChannel),
 			byte(statesync.LightBlockChannel),
+			byte(statesync.ParamsChannel),
 		},
 		Moniker: config.Moniker,
 		Other: types.NodeInfoOther{