Simplify BABE pre-digest definitions (#5289)

* Init vrf crate without type alias

* Generic PreDigest definition for BABE

* Fix BABE vrf interface change

* Missing default-features def in sp-consensus-babe

* Fix sp-consensus-babe compile

* frame-babe: fix type inference

* Unify type definitions of vrf output/proof and randomness

* frame-babe: fix tests

* Bump node impl version

* Update cargo lock

* Derive Copy for RawVRFOutput and RawVRFProof

* Fix duplicated derive

Co-authored-by: Gavin Wood <gavin@parity.io>

substrate/client/consensus/babe/src/authorship.rs

@@ -22,6 +22,7 @@ use sp_consensus_babe::{
 	SlotNumber, AuthorityPair, BabeConfiguration
 };
 use sp_consensus_babe::digests::PreDigest;
+use sp_consensus_vrf::schnorrkel::{VRFOutput, VRFProof};
 use sp_core::{U256, blake2_256};
 use codec::Encode;
 use schnorrkel::vrf::VRFInOut;
@@ -201,8 +202,8 @@ fn claim_primary_slot(
 			.map(|s| {
 				PreDigest::Primary {
 					slot_number,
-					vrf_output: s.0.to_output(),
-					vrf_proof: s.1,
+					vrf_output: VRFOutput(s.0.to_output()),
+					vrf_proof: VRFProof(s.1),
 					authority_index: authority_index as u32,
 				}
 			});