Improve config for pallet_bridge_grandpa (#161)

* Update max bridged authorities follow https://github.com/paritytech/parity-bridges-common/blob/c28b3ff66c29c6c9d9955583b50c2114de14e98c/primitives/chain-rococo/src/lib.rs#L45-L48

* Update max bridged header size to 65536

* Update weight info follow https://github.com/paritytech/parity-bridges-common/blob/c28b3ff66c29c6c9d9955583b50c2114de14e98c/bin/millau/runtime/src/lib.rs#L431

* Keep WeightInfo to ()

* Code Clean

Author: fewensa

runtime/crab/src/pallets/bridge_grandpa.rs

@@ -26,8 +26,8 @@ pub type PolkadotHeadersToKeep = ConstU32<500>;
 impl pallet_bridge_grandpa::Config<WithPolkadotGrandpa> for Runtime {
 	type BridgedChain = bp_darwinia::DarwiniaLike;
 	type HeadersToKeep = PolkadotHeadersToKeep;
-	type MaxBridgedAuthorities = ();
-	type MaxBridgedHeaderSize = ();
+	type MaxBridgedAuthorities = ConstU32<100_000>;
+	type MaxBridgedHeaderSize = ConstU32<65536>;
 	type MaxRequests = ConstU32<50>;
 	type WeightInfo = ();
 }

runtime/darwinia/src/pallets/bridge_grandpa.rs

@@ -26,8 +26,8 @@ pub type KusamaHeadersToKeep = ConstU32<500>;
 impl pallet_bridge_grandpa::Config<WithKusamaGrandpa> for Runtime {
 	type BridgedChain = bp_crab::DarwiniaLike;
 	type HeadersToKeep = KusamaHeadersToKeep;
-	type MaxBridgedAuthorities = ();
-	type MaxBridgedHeaderSize = ();
+	type MaxBridgedAuthorities = ConstU32<100_000>;
+	type MaxBridgedHeaderSize = ConstU32<65536>;
 	type MaxRequests = ConstU32<50>;
 	type WeightInfo = ();
 }