Check block CLI command (#4240)

* Check block operation

* Update client/cli/src/lib.rs

* Update client/cli/src/params.rs

substrate/client/network/src/protocol/sync.rs

@@ -662,6 +662,7 @@ impl<B: BlockT> ChainSync<B> {
 									justification: block_data.block.justification,
 									origin: block_data.origin,
 									allow_missing_state: false,
+									import_existing: false,
 								}
 							}).collect()
 					}
@@ -675,6 +676,7 @@ impl<B: BlockT> ChainSync<B> {
 								justification: b.justification,
 								origin: Some(who.clone()),
 								allow_missing_state: true,
+								import_existing: false,
 							}
 						}).collect()
 					}

substrate/client/network/src/test/block_import.rs

@@ -41,6 +41,7 @@ fn prepare_good_block() -> (TestClient, Hash, u64, PeerId, IncomingBlock<Block>)
 		justification,
 		origin: Some(peer_id.clone()),
 		allow_missing_state: false,
+		import_existing: false,
 	})
 }
 

substrate/client/network/src/test/mod.rs

@@ -99,6 +99,7 @@ impl<B: BlockT> Verifier<B> for PassThroughVerifier {
 			auxiliary: Vec::new(),
 			fork_choice: ForkChoiceStrategy::LongestChain,
 			allow_missing_state: false,
+			import_existing: false,
 		}, maybe_keys))
 	}
 }