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/state-trie-migration/src/lib.rs

@@ -1051,7 +1051,7 @@ mod mock {
 	use super::*;
 	use crate as pallet_state_trie_migration;
 	use frame_support::{
-		parameter_types,
+		derive_impl, parameter_types,
 		traits::{ConstU32, ConstU64, Hooks},
 		weights::Weight,
 	};
@@ -1081,6 +1081,7 @@ mod mock {
 		pub const SS58Prefix: u8 = 42;
 	}
 
+	#[derive_impl(frame_system::config_preludes::TestDefaultConfig as frame_system::DefaultConfig)]
 	impl frame_system::Config for Test {
 		type BaseCallFilter = frame_support::traits::Everything;
 		type BlockWeights = ();