Update latest substrate master (#462)

* update substrate to latest polkadot-master

* fix test runtime

polkadot/runtime/src/lib.rs

@@ -99,7 +99,7 @@ pub const VERSION: RuntimeVersion = RuntimeVersion {
 	spec_name: create_runtime_str!("kusama"),
 	impl_name: create_runtime_str!("parity-kusama"),
 	authoring_version: 1,
-	spec_version: 1003,
+	spec_version: 1004,
 	impl_version: 0,
 	apis: RUNTIME_API_VERSIONS,
 };
@@ -174,6 +174,9 @@ parameter_types! {
 impl babe::Trait for Runtime {
 	type EpochDuration = EpochDuration;
 	type ExpectedBlockTime = ExpectedBlockTime;
+
+	// session module is the trigger
+	type EpochChangeTrigger = babe::ExternalTrigger;
 }
 
 impl indices::Trait for Runtime {

polkadot/runtime/src/parachains.rs

@@ -981,6 +981,9 @@ mod tests {
 	impl babe::Trait for Test {
 		type EpochDuration = EpochDuration;
 		type ExpectedBlockTime = ExpectedBlockTime;
+
+		// session module is the trigger
+		type EpochChangeTrigger = babe::ExternalTrigger;
 	}
 
 	parameter_types! {