Introduce rpc client for relay chain full node (#963)

* Initial network interface preparations

* Implement get_storage_by_key

* Implement `validators` and `session_index_for_child`

* Implement persisted_validation_data and candidate_pending_availability

* Fix method name for persisted_validation_data and add encoded params

* Implement `retrieve_dmq_contents` and `retrieve_all_inbound_hrmp_channel_contents`

* Implement `prove_read`

* Introduce separate RPC client, expose JsonRpSee errors

* Simplify closure in call_remote_runtime_function

* Implement import stream, upgrade JsonRpSee

* Implement finality stream

* Remove unused method from interface

* Implement `is_major_syncing`

* Implement `wait_on_block`

* Fix tests

* Unify error handling `ApiError`

* Replace WaitError with RelayChainError

* Wrap BlockChainError in RelayChainError

* Unify error handling in relay chain intefaces

* Fix return type of proof method

* Improve error handling of new methods

* Improve error handling and move logging outside of interface

* Clean up

* Remove unwanted changes, clean up

* Remove unused import

* Add format for StatemachineError and remove nused From trait

* Use 'thiserror' crate to simplify error handling

* Expose error for overseer, further simplify error handling

* Reintroduce network interface

* Implement cli option

* Adjust call_state method to use hashes

* Disable PoV recovery when RPC is used

* Add integration test for network full node

* Use Hash instead of BlockId to ensure compatibility with RPC interface

* Fix cargo check warnings

* Implement retries

* Remove `expect` statements from code

* Update jsonrpsee to 0.8.0 and make collator keys optional

* Make cli arguments conflicting

* Remove unused `block_status` method

* Add clippy fixes

* Cargo fmt

* Validate relay chain rpc url

* Clean up dependencies and add one more integration test

* Clean up

* Clean up dependencies of relay-chain-network

* Use hash instead of blockid for rpc methods

* Fix tests

* Update client/cli/src/lib.rs

Co-authored-by: Koute <koute@users.noreply.github.com>

* Improve error message of cli validation

* Add rpc client constructor

* Do not use debug formatting for errors

* Improve logging for remote runtime methods

* Only retry on transport problems

* Use PHash by value, rename test

* Improve tracing, return error  on relay-chain-interface build

* Fix naming, use generics instead of deserializing manually

* Rename RelayChainLocal and RelayChainNetwork

* lock

* Format

* Use impl trait for encodable runtime payload

* Only instantiate full node in tests when we need it

* Upgrade scale-codec to 3.0.0

* Improve expect log

Co-authored-by: Koute <koute@users.noreply.github.com>

client/consensus/common/src/tests.rs

@@ -25,7 +25,7 @@ use cumulus_test_client::{
 };
 use futures::{channel::mpsc, executor::block_on, select, FutureExt, Stream, StreamExt};
 use futures_timer::Delay;
-use polkadot_primitives::v1::{Block as PBlock, Id as ParaId};
+use polkadot_primitives::v1::Id as ParaId;
 use sc_client_api::UsageProvider;
 use sc_consensus::{BlockImport, BlockImportParams, ForkChoiceStrategy};
 use sp_blockchain::Error as ClientError;
@@ -98,11 +98,7 @@ impl crate::parachain_consensus::RelaychainClient for Relaychain {
 		Ok(Box::new(stream.map(|v| v.encode())))
 	}
 
-	async fn parachain_head_at(
-		&self,
-		_: &BlockId<PBlock>,
-		_: ParaId,
-	) -> RelayChainResult<Option<Vec<u8>>> {
+	async fn parachain_head_at(&self, _: PHash, _: ParaId) -> RelayChainResult<Option<Vec<u8>>> {
 		unimplemented!("Not required for tests")
 	}
 }