Bridges subtree sync (#3022)

* Squashed 'bridges/' changes from edf33a2c85..277f0d5496

277f0d5496 Dynamic fees for bridges-v1 (#2294)
b1c51f7dd2 Finality loop refactoring (#2357)
620db2b10f Add equivocation detector crate and implement clients (#2348) (#2353)
3fe4b13eb4 Add basic equivocation detection pipeline schema (#2338) (#2341)

git-subtree-dir: bridges
git-subtree-split: 277f0d54961c800b231d8123c6445f378b1deb89

* [dynfees] Rococo/Wococo does not need congestion and dynamic fees (for now)

* Fix

* ".git/.scripts/commands/fmt/fmt.sh"

* Forgotten bridges/Cargo.lock

---------

Co-authored-by: command-bot <>

cumulus/bridges/primitives/test-utils/src/keyring.rs

@@ -16,10 +16,11 @@
 
 //! Utilities for working with test accounts.
 
+use bp_header_chain::{justification::JustificationVerificationContext, AuthoritySet};
 use codec::Encode;
 use ed25519_dalek::{Keypair, PublicKey, SecretKey, Signature};
 use finality_grandpa::voter_set::VoterSet;
-use sp_consensus_grandpa::{AuthorityId, AuthorityList, AuthorityWeight};
+use sp_consensus_grandpa::{AuthorityId, AuthorityList, AuthorityWeight, SetId};
 use sp_runtime::RuntimeDebug;
 use sp_std::prelude::*;
 
@@ -78,6 +79,11 @@ pub fn voter_set() -> VoterSet<AuthorityId> {
 	VoterSet::new(authority_list()).unwrap()
 }
 
+/// Get a valid justification verification context for a GRANDPA round.
+pub fn verification_context(set_id: SetId) -> JustificationVerificationContext {
+	AuthoritySet { authorities: authority_list(), set_id }.try_into().unwrap()
+}
+
 /// Convenience function to get a list of Grandpa authorities.
 pub fn authority_list() -> AuthorityList {
 	test_keyring().iter().map(|(id, w)| (AuthorityId::from(*id), *w)).collect()