Include a reference to the validation data in the candidate descriptor (#1442)

* rename GlobalValidationSchedule to GlobalValidationData

* guide: update candidate descriptor to contain validation data hash

* guide: add note in inclusion module about checking validation data hash

* primitives: update CandidateDescriptor to contain new hash

* fix payload computation

* add helpers for computing validation data to runtime modules

* guide: note routines

* inclusion: check validation data hash and fix local_validation_data bug

* add a case to candidate_checks and improve that test substantially

* bump versions

* address review comments

* add a test for including code upgrade

* bump kusama version

* bump westend & polkadot versions

polkadot/network/src/protocol/tests.rs

@@ -21,7 +21,7 @@ use polkadot_primitives::v0::{
 	Block,
 	Id as ParaId, Chain, DutyRoster, ParachainHost, ValidatorId,
 	Retriable, CollatorId, AbridgedCandidateReceipt,
-	GlobalValidationSchedule, LocalValidationData, ErasureChunk, SigningContext,
+	GlobalValidationData, LocalValidationData, ErasureChunk, SigningContext,
 	PoVBlock, BlockData, ValidationCode,
 };
 use polkadot_validation::{SharedTable, TableRouter};
@@ -180,7 +180,7 @@ sp_api::mock_impl_runtime_apis! {
 			Some(ValidationCode(Vec::new()))
 		}
 
-		fn global_validation_schedule() -> GlobalValidationSchedule {
+		fn global_validation_data() -> GlobalValidationData {
 			Default::default()
 		}