validator_discovery: pass PeerSet to the request (#2372)

* validator_discovery: pass PeerSet to the request

* validator_discovery: track PeerSet of connected peers

* validator_discovery: fix tests

* validator_discovery: fix long line

* some fixes

* some validator_discovery logs

* log validator discovery request

* Also connect to validators on `DistributePoV`.

* validator_discovery: store the whole state per peer_set

* bump spec versions in kusama, polkadot and westend

* Correcting doc.

* validator_discovery: bump channel capacity

* pov-distribution: some cleanup

* this should fix the test, but it does not

* I just got some brain damage while fixing this

Why are you even reading this???

* wrap long line

* address some review nits

Co-authored-by: Robert Klotzner <robert.klotzner@gmx.at>

polkadot/node/subsystem/src/messages.rs

@@ -25,7 +25,7 @@
 use futures::channel::{mpsc, oneshot};
 use thiserror::Error;
 use polkadot_node_network_protocol::{
-	v1 as protocol_v1, ReputationChange, PeerId,
+	peer_set::PeerSet, v1 as protocol_v1, ReputationChange, PeerId,
 	request_response::{Requests, request::IncomingRequest, v1 as req_res_v1},
 };
 use polkadot_node_primitives::{
@@ -229,6 +229,8 @@ pub enum NetworkBridgeMessage {
 	ConnectToValidators {
 		/// Ids of the validators to connect to.
 		validator_ids: Vec<AuthorityDiscoveryId>,
+		/// The underlying protocol to use for this request.
+		peer_set: PeerSet,
 		/// Response sender by which the issuer can learn the `PeerId`s of
 		/// the validators as they are connected.
 		/// The response is sent immediately for already connected peers.