Rococo & Westend People Chain (paritytech#2281)

Rococo and Westend runtimes for the "People Chain". This chain contains
the Identity pallet with plans to migrate all related data from the
Relay Chain.

Changes `IdentityInfo` to:

- Remove `additional_fields`.
- Add `github` and `discord` as first class fields. From scraping chain
data, these were the only two additional fields used (for the Fellowship
and Ambassador Program, respectively).
- Rename `riot` to `matrix`.

Note: This will use the script in
paritytech#2025 to generate the
genesis state.

TODO:

- [x] paritytech#1814 and
integration of the Identity Migrator pallet for migration.
- [x] Tests: paritytech#2373

---------

Co-authored-by: Muharem <ismailov.m.h@gmail.com>
Co-authored-by: Michal Kucharczyk <1728078+michalkucharczyk@users.noreply.github.com>
Co-authored-by: Dónal Murray <donal.murray@parity.io>
Co-authored-by: Richard Melkonian <35300528+0xmovses@users.noreply.github.com>
Co-authored-by: Liam Aharon <liam.aharon@hotmail.com>

substrate/frame/identity/Cargo.toml

@@ -32,6 +32,7 @@ sp-core = { path = "../../primitives/core" }
 
 [features]
 default = ["std"]
+
 std = [
 	"codec/std",
 	"enumflags2/std",

substrate/frame/identity/src/lib.rs

@@ -1005,8 +1005,9 @@ impl<T: Config> Pallet<T> {
 		Ok((new_id_deposit, new_subs_deposit))
 	}
 
-	/// Set an identity with zero deposit. Only used for benchmarking that involves `rejig_deposit`.
-	#[cfg(feature = "runtime-benchmarks")]
+	/// Set an identity with zero deposit. Used for benchmarking and XCM emulator tests that involve
+	/// `rejig_deposit`.
+	#[cfg(any(feature = "runtime-benchmarks", feature = "std"))]
 	pub fn set_identity_no_deposit(
 		who: &T::AccountId,
 		info: T::IdentityInformation,
@@ -1022,15 +1023,25 @@ impl<T: Config> Pallet<T> {
 		Ok(())
 	}
 
-	/// Set subs with zero deposit. Only used for benchmarking that involves `rejig_deposit`.
-	#[cfg(feature = "runtime-benchmarks")]
-	pub fn set_sub_no_deposit(who: &T::AccountId, sub: T::AccountId) -> DispatchResult {
+	/// Set subs with zero deposit and default name. Only used for benchmarks that involve
+	/// `rejig_deposit`.
+	#[cfg(any(feature = "runtime-benchmarks", feature = "std"))]
+	pub fn set_subs_no_deposit(
+		who: &T::AccountId,
+		subs: Vec<(T::AccountId, Data)>,
+	) -> DispatchResult {
 		use frame_support::BoundedVec;
-		let subs = BoundedVec::<_, T::MaxSubAccounts>::try_from(vec![sub]).unwrap();
+		let mut sub_accounts = BoundedVec::<T::AccountId, T::MaxSubAccounts>::default();
+		for (sub, name) in subs {
+			<SuperOf<T>>::insert(&sub, (who.clone(), name));
+			sub_accounts
+				.try_push(sub)
+				.expect("benchmark should not pass more than T::MaxSubAccounts");
+		}
 		SubsOf::<T>::insert::<
 			&T::AccountId,
 			(BalanceOf<T>, BoundedVec<T::AccountId, T::MaxSubAccounts>),
-		>(&who, (Zero::zero(), subs));
+		>(&who, (Zero::zero(), sub_accounts));
 		Ok(())
 	}
 }