Make System Parachains trusted Teleporters (#1368)

Make System Parachain trusted Teleporters of each other.

Migration of https://github.com/paritytech/cumulus/pull/2842

---------

Co-authored-by: command-bot <>
Co-authored-by: joe petrowski <25483142+joepetrowski@users.noreply.github.com>

cumulus/parachains/integration-tests/emulated/common/src/lib.rs

@@ -15,6 +15,7 @@
 
 pub mod constants;
 pub mod impls;
+pub mod macros;
 pub mod xcm_helpers;
 
 use constants::{
@@ -22,16 +23,24 @@ use constants::{
 	asset_hub_rococo, asset_hub_westend, bridge_hub_rococo, penpal, rococo, westend,
 };
 use impls::{RococoWococoMessageHandler, WococoRococoMessageHandler};
+pub use paste;
 
 // Substrate
 use frame_support::traits::OnInitialize;
+pub use pallet_balances;
 
 // Cumulus
+pub use cumulus_pallet_xcmp_queue;
+pub use xcm_emulator::Chain;
 use xcm_emulator::{
 	decl_test_bridges, decl_test_networks, decl_test_parachains, decl_test_relay_chains,
 	decl_test_sender_receiver_accounts_parameter_types, DefaultMessageProcessor,
 };
 
+// Polkadot
+pub use pallet_xcm;
+pub use xcm::prelude::{AccountId32, WeightLimit};
+
 decl_test_relay_chains! {
 	#[api_version(8)]
 	pub struct Westend {
@@ -120,6 +129,7 @@ decl_test_parachains! {
 		pallets = {
 			PolkadotXcm: penpal_runtime::PolkadotXcm,
 			Assets: penpal_runtime::Assets,
+			Balances: penpal_runtime::Balances,
 		}
 	},
 	// Rococo Parachains
@@ -156,6 +166,7 @@ decl_test_parachains! {
 		pallets = {
 			PolkadotXcm: asset_hub_kusama_runtime::PolkadotXcm,
 			Assets: asset_hub_kusama_runtime::Assets,
+			Balances: asset_hub_kusama_runtime::Balances,
 		}
 	},
 	// Wococo Parachains
@@ -190,6 +201,7 @@ decl_test_parachains! {
 		pallets = {
 			PolkadotXcm: asset_hub_polkadot_runtime::PolkadotXcm,
 			Assets: asset_hub_polkadot_runtime::Assets,
+			Balances: asset_hub_polkadot_runtime::Balances,
 		}
 	},
 	pub struct PenpalRococoA {