Bring back runtime upgrade test (#525)

This brings back the runtime upgrade test and also updates Substrate &
Polkadot.

test/runtime/src/lib.rs

@@ -253,15 +253,6 @@ impl cumulus_pallet_parachain_system::Config for Runtime {
 
 parameter_types! {
 	pub storage ParachainId: cumulus_primitives_core::ParaId = 100.into();
-	pub storage UpgradeDetection: bool = false;
-}
-
-pub struct UpgradeDetectionOnRuntimeUpgrade;
-impl frame_support::traits::OnRuntimeUpgrade for UpgradeDetectionOnRuntimeUpgrade {
-	fn on_runtime_upgrade() -> u64 {
-		UpgradeDetection::set(&true);
-		0
-	}
 }
 
 construct_runtime! {
@@ -326,7 +317,6 @@ pub type Executive = frame_executive::Executive<
 	frame_system::ChainContext<Runtime>,
 	Runtime,
 	AllPallets,
-	UpgradeDetectionOnRuntimeUpgrade,
 >;
 /// The payload being signed in transactions.
 pub type SignedPayload = generic::SignedPayload<Call, SignedExtra>;
@@ -336,10 +326,6 @@ decl_runtime_apis! {
 		/// Returns the last timestamp of a runtime.
 		fn get_last_timestamp() -> u64;
 	}
-	pub trait GetUpgradeDetection {
-		/// Returns `true` if the runtime has been upgraded at least once.
-		fn has_upgraded() -> bool;
-	}
 }
 
 impl_runtime_apis! {
@@ -417,12 +403,6 @@ impl_runtime_apis! {
 		}
 	}
 
-	impl crate::GetUpgradeDetection<Block> for Runtime {
-		fn has_upgraded() -> bool {
-			UpgradeDetection::get()
-		}
-	}
-
 	impl cumulus_primitives_core::CollectCollationInfo<Block> for Runtime {
 		fn collect_collation_info() -> cumulus_primitives_core::CollationInfo {
 			ParachainSystem::collect_collation_info()