Ensure correct variant count in Runtime[Hold/Freeze]Reason (#1900)

closes paritytech/polkadot-sdk#1882

## Breaking Changes

This PR introduces a new item to `pallet_balances::Config`:

```diff
trait Config {
++    type RuntimeFreezeReasons;
}
```

This value is only used to check it against `type MaxFreeze`. A similar
check has been added for `MaxHolds` against `RuntimeHoldReasons`, which
is already given to `pallet_balances`.

In all contexts, you should pass the real `RuntimeFreezeReasons`
generated by `construct_runtime` to `type RuntimeFreezeReasons`. Passing
`()` would also work, but it would imply that the runtime uses no
freezes at all.

---------

Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
Co-authored-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>

pallet-xcm/src/mock.rs

@@ -274,6 +274,7 @@ impl pallet_balances::Config for Test {
 	type MaxReserves = MaxReserves;
 	type ReserveIdentifier = [u8; 8];
 	type RuntimeHoldReason = RuntimeHoldReason;
+	type RuntimeFreezeReason = RuntimeFreezeReason;
 	type FreezeIdentifier = ();
 	type MaxHolds = ConstU32<0>;
 	type MaxFreezes = ConstU32<0>;

xcm-builder/src/tests/pay/mock.rs

@@ -75,6 +75,7 @@ impl pallet_balances::Config for Test {
 	type MaxReserves = ();
 	type ReserveIdentifier = [u8; 8];
 	type RuntimeHoldReason = RuntimeHoldReason;
+	type RuntimeFreezeReason = RuntimeFreezeReason;
 	type FreezeIdentifier = ();
 	type MaxHolds = ConstU32<0>;
 	type MaxFreezes = ConstU32<0>;

xcm-builder/tests/mock/mod.rs

@@ -119,6 +119,7 @@ impl pallet_balances::Config for Runtime {
 	type MaxReserves = MaxReserves;
 	type ReserveIdentifier = [u8; 8];
 	type RuntimeHoldReason = RuntimeHoldReason;
+	type RuntimeFreezeReason = RuntimeFreezeReason;
 	type FreezeIdentifier = ();
 	type MaxHolds = ConstU32<0>;
 	type MaxFreezes = ConstU32<0>;

xcm-simulator/example/src/parachain.rs

@@ -106,6 +106,7 @@ impl pallet_balances::Config for Runtime {
 	type MaxReserves = MaxReserves;
 	type ReserveIdentifier = [u8; 8];
 	type RuntimeHoldReason = RuntimeHoldReason;
+	type RuntimeFreezeReason = RuntimeFreezeReason;
 	type FreezeIdentifier = ();
 	type MaxHolds = ConstU32<0>;
 	type MaxFreezes = ConstU32<0>;

xcm-simulator/example/src/relay_chain.rs

@@ -92,6 +92,7 @@ impl pallet_balances::Config for Runtime {
 	type MaxReserves = MaxReserves;
 	type ReserveIdentifier = [u8; 8];
 	type RuntimeHoldReason = RuntimeHoldReason;
+	type RuntimeFreezeReason = RuntimeFreezeReason;
 	type FreezeIdentifier = ();
 	type MaxHolds = ConstU32<0>;
 	type MaxFreezes = ConstU32<0>;

xcm-simulator/fuzzer/src/parachain.rs

@@ -95,6 +95,7 @@ impl pallet_balances::Config for Runtime {
 	type MaxReserves = MaxReserves;
 	type ReserveIdentifier = [u8; 8];
 	type RuntimeHoldReason = RuntimeHoldReason;
+	type RuntimeFreezeReason = RuntimeFreezeReason;
 	type FreezeIdentifier = ();
 	type MaxHolds = ConstU32<0>;
 	type MaxFreezes = ConstU32<0>;

xcm-simulator/fuzzer/src/relay_chain.rs

@@ -91,6 +91,7 @@ impl pallet_balances::Config for Runtime {
 	type MaxReserves = MaxReserves;
 	type ReserveIdentifier = [u8; 8];
 	type RuntimeHoldReason = RuntimeHoldReason;
+	type RuntimeFreezeReason = RuntimeFreezeReason;
 	type FreezeIdentifier = ();
 	type MaxHolds = ConstU32<0>;
 	type MaxFreezes = ConstU32<0>;