Add broker pallet to coretime-westend (paritytech#3272)

This brings functionality to Westend's Coretime Chain runtime, where
previously it was not much more than a shell.

It is assumed that the Coretime pallet will have the same index in the
Westend runtime as it does in Rococo for the runtime calls.

TODO:
- [x] Generate chainspec
- [x] Regenerate weights
- [x] Check hardcoded RuntimeCall weights against relay weights for
transacts

Aura key generation: paritytech/devops#2725

---------

Co-authored-by: command-bot <>
Co-authored-by: Bastian Köcher <[email protected]>
Co-authored-by: Anton Vilhelm Ásgeirsson <[email protected]>

substrate/bin/node/runtime/src/lib.rs

@@ -2027,7 +2027,7 @@ pub struct CoretimeProvider;
 impl CoretimeInterface for CoretimeProvider {
 	type AccountId = AccountId;
 	type Balance = Balance;
-	type RealyChainBlockNumberProvider = System;
+	type RelayChainBlockNumberProvider = System;
 	fn request_core_count(_count: CoreIndex) {}
 	fn request_revenue_info_at(_when: u32) {}
 	fn credit_account(_who: Self::AccountId, _amount: Self::Balance) {}

substrate/frame/broker/src/coretime_interface.rs

@@ -51,7 +51,7 @@ pub enum CoreAssignment {
 pub type RCBlockNumberOf<T> = <RCBlockNumberProviderOf<T> as BlockNumberProvider>::BlockNumber;
 
 /// Relay chain block number provider of `T` that implements [`CoretimeInterface`].
-pub type RCBlockNumberProviderOf<T> = <T as CoretimeInterface>::RealyChainBlockNumberProvider;
+pub type RCBlockNumberProviderOf<T> = <T as CoretimeInterface>::RelayChainBlockNumberProvider;
 
 /// Type able to accept Coretime scheduling instructions and provide certain usage information.
 /// Generally implemented by the Relay-chain or some means of communicating with it.
@@ -65,7 +65,7 @@ pub trait CoretimeInterface {
 	type Balance: AtLeast32BitUnsigned;
 
 	/// A provider for the relay chain block number.
-	type RealyChainBlockNumberProvider: BlockNumberProvider;
+	type RelayChainBlockNumberProvider: BlockNumberProvider;
 
 	/// Requests the Relay-chain to alter the number of schedulable cores to `count`. Under normal
 	/// operation, the Relay-chain SHOULD send a `notify_core_count(count)` message back.
@@ -128,7 +128,7 @@ pub trait CoretimeInterface {
 impl CoretimeInterface for () {
 	type AccountId = ();
 	type Balance = u64;
-	type RealyChainBlockNumberProvider = ();
+	type RelayChainBlockNumberProvider = ();
 
 	fn request_core_count(_count: CoreIndex) {}
 	fn request_revenue_info_at(_when: RCBlockNumberOf<Self>) {}

substrate/frame/broker/src/mock.rs

@@ -77,7 +77,7 @@ pub struct TestCoretimeProvider;
 impl CoretimeInterface for TestCoretimeProvider {
 	type AccountId = u64;
 	type Balance = u64;
-	type RealyChainBlockNumberProvider = System;
+	type RelayChainBlockNumberProvider = System;
 	fn request_core_count(count: CoreIndex) {
 		CoreCountInbox::<Test>::put(count);
 	}