Statemine state migration runtime changes.

[cheme]

This PR contains runtime change to switch state mine to a hybrid trie state, as needed for https://github.com/paritytech/devops/issues/1508.
Note that the accounts need to be change to the rights KEY_ROOT_MIG_CONTROLLER and KEY_MIG_CONTROLLER that will be responsible for the migration. CC @PierreBesson

[bkchr]

Suggested change

	pub struct MigController;
	pub struct RootMigController;
	const KEY_ROOT_MIG_CONTROLLER: [u8; 32] = [
	82, 188, 113, 193, 236, 165, 53, 55, 73, 84, 45, 253, 240, 175, 151, 191, 118, 79, 156, 47, 68,
	232, 96, 205, 72, 95, 28, 216, 100, 0, 246, 73,
	];
	const KEY_MIG_CONTROLLER: [u8; 32] = [
	82, 188, 113, 193, 236, 165, 53, 55, 73, 84, 45, 253, 240, 175, 151, 191, 118, 79, 156, 47, 68,
	232, 96, 205, 72, 95, 28, 216, 100, 0, 246, 73,
	];
	impl SortedMembers<AccountId> for RootMigController {
	fn sorted_members() -> Vec<AccountId> {
	// hardcoded key of controller for manual migration
	vec![KEY_ROOT_MIG_CONTROLLER.into()]
	}
	}
	impl SortedMembers<AccountId> for MigController {
	fn sorted_members() -> Vec<AccountId> {
	// hardcoded key of controller for manual migration
	vec![KEY_MIG_CONTROLLER.into()]
	}
	}
	frame_support::ord_parameter_types! {
	pub const KEY_MIG_CONTROLLER = hex!("INSERT_HEX_STRING");
	pub const KEY_ROOT_MIG_CONTROLLER = hex!("INSERT_HEX_STRING");
	}
	const KEY_ROOT_MIG_CONTROLLER: [u8; 32] = [
	82, 188, 113, 193, 236, 165, 53, 55, 73, 84, 45, 253, 240, 175, 151, 191, 118, 79, 156, 47, 68,
	232, 96, 205, 72, 95, 28, 216, 100, 0, 246, 73,
	];
	const KEY_MIG_CONTROLLER: [u8; 32] = [
	82, 188, 113, 193, 236, 165, 53, 55, 73, 84, 45, 253, 240, 175, 151, 191, 118, 79, 156, 47, 68,
	232, 96, 205, 72, 95, 28, 216, 100, 0, 246, 73,
	];
	impl SortedMembers<AccountId> for RootMigController {
	fn sorted_members() -> Vec<AccountId> {
	// hardcoded key of controller for manual migration
	vec![KEY_ROOT_MIG_CONTROLLER.into()]
	}
	}
	impl SortedMembers<AccountId> for MigController {
	fn sorted_members() -> Vec<AccountId> {
	// hardcoded key of controller for manual migration
	vec![KEY_MIG_CONTROLLER.into()]
	}
	}

[bkchr]

We should feature gate this for now.

As the GCP is still deploying the chain on Rococo for testing.

[bkchr]

Should also be feature gated.

[bkchr]

Do we need this?

[cheme]

I use it to ensure the controller account is correct (from the ss58 one).
I did check again why I did it in the first place, turns out Ss58Codec is behind 'full_crypto' feature and 'from_ss58check' is behind std.
I don't really see why from_ss58check could not be no_std, just would be a bit more work to switch it.

[bkchr]

Suggested change

//type SignedFilter = frame_system::EnsureSigned<Self::AccountId>;

[kianenigma]

Not sure if/why we need a new feature flag.

[kianenigma]

please merge #1424 (review) as well before starting the devops process.

[cheme]

bot merge

[paritytech-processbot]

Error: Statuses failed for 48642b3

[cheme]

bot merge

[paritytech-processbot]

Waiting for commit status.

[paritytech-processbot]

Merge cancelled due to error. Error: Statuses failed for 180ab19

[cheme]

bot merge

[paritytech-processbot]

Waiting for commit status.