Moves all test runtimes to use derive_impl (#2409)

Step in https://github.com/paritytech/polkadot-sdk/issues/171

This PR adds `derive_impl` on all `frame_system` config impls for mock
runtimes. The overridden configs are maintained as of now to ensure
minimal changes.

---------

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

substrate/frame/sudo/src/mock.rs

@@ -19,7 +19,10 @@
 
 use super::*;
 use crate as sudo;
-use frame_support::traits::{ConstU32, Contains};
+use frame_support::{
+	derive_impl,
+	traits::{ConstU32, Contains},
+};
 use sp_core::{ConstU64, H256};
 use sp_io;
 use sp_runtime::{
@@ -108,6 +111,7 @@ impl Contains<RuntimeCall> for BlockEverything {
 	}
 }
 
+#[derive_impl(frame_system::config_preludes::TestDefaultConfig as frame_system::DefaultConfig)]
 impl frame_system::Config for Test {
 	type BaseCallFilter = BlockEverything;
 	type BlockWeights = ();