Keystore overhaul (#13615)

* Remove 'supported_keys' 'sign_with_any' and 'sign_with_all' from keystore trait

* Remove the aync keystore

* Renaming:
- SyncCryptoStore -> Keystore
- SyncCryptoStorePtr -> KeystorePtr
- KeyStore -> MemoryKeystore

* Fix authority discovery worker and tests

* Rename 'insert_unknown' to 'insert'

* Remove leftover

substrate/bin/node-template/node/src/service.rs

@@ -150,7 +150,7 @@ pub fn new_partial(
 fn remote_keystore(_url: &String) -> Result<Arc<LocalKeystore>, &'static str> {
 	// FIXME: here would the concrete keystore be built,
 	//        must return a concrete type (NOT `LocalKeystore`) that
-	//        implements `CryptoStore` and `SyncCryptoStore`
+	//        implements `Keystore`
 	Err("Remote Keystore not supported.")
 }
 
@@ -233,7 +233,7 @@ pub fn new_full(mut config: Configuration) -> Result<TaskManager, ServiceError>
 	let _rpc_handlers = sc_service::spawn_tasks(sc_service::SpawnTasksParams {
 		network: network.clone(),
 		client: client.clone(),
-		keystore: keystore_container.sync_keystore(),
+		keystore: keystore_container.keystore(),
 		task_manager: &mut task_manager,
 		transaction_pool: transaction_pool.clone(),
 		rpc_builder: rpc_extensions_builder,
@@ -276,7 +276,7 @@ pub fn new_full(mut config: Configuration) -> Result<TaskManager, ServiceError>
 				},
 				force_authoring,
 				backoff_authoring_blocks,
-				keystore: keystore_container.sync_keystore(),
+				keystore: keystore_container.keystore(),
 				sync_oracle: sync_service.clone(),
 				justification_sync_link: sync_service.clone(),
 				block_proposal_slot_portion: SlotProportion::new(2f32 / 3f32),
@@ -296,8 +296,7 @@ pub fn new_full(mut config: Configuration) -> Result<TaskManager, ServiceError>
 	if enable_grandpa {
 		// if the node isn't actively participating in consensus then it doesn't
 		// need a keystore, regardless of which protocol we use below.
-		let keystore =
-			if role.is_authority() { Some(keystore_container.sync_keystore()) } else { None };
+		let keystore = if role.is_authority() { Some(keystore_container.keystore()) } else { None };
 
 		let grandpa_config = sc_consensus_grandpa::Config {
 			// FIXME #1578 make this available through chainspec