testnet genesis: enable approval voting v2 assignments and coalescing (#3827)

This is a long due chore ...

---------

Signed-off-by: Andrei Sandu <andrei-mihail@parity.io>
Co-authored-by: ordian <write@reusable.software>

polkadot/node/service/src/chain_spec.rs

@@ -123,7 +123,8 @@ fn default_parachains_host_configuration(
 ) -> polkadot_runtime_parachains::configuration::HostConfiguration<polkadot_primitives::BlockNumber>
 {
 	use polkadot_primitives::{
-		vstaging::node_features::FeatureIndex, AsyncBackingParams, MAX_CODE_SIZE, MAX_POV_SIZE,
+		vstaging::{node_features::FeatureIndex, ApprovalVotingParams},
+		AsyncBackingParams, MAX_CODE_SIZE, MAX_POV_SIZE,
 	};
 
 	polkadot_runtime_parachains::configuration::HostConfiguration {
@@ -158,7 +159,8 @@ fn default_parachains_host_configuration(
 			allowed_ancestry_len: 2,
 		},
 		node_features: bitvec::vec::BitVec::from_element(
-			1u8 << (FeatureIndex::ElasticScalingMVP as usize),
+			1u8 << (FeatureIndex::ElasticScalingMVP as usize) |
+				1u8 << (FeatureIndex::EnableAssignmentsV2 as usize),
 		),
 		scheduler_params: SchedulerParams {
 			lookahead: 2,
@@ -166,6 +168,7 @@ fn default_parachains_host_configuration(
 			paras_availability_period: 4,
 			..Default::default()
 		},
+		approval_voting_params: ApprovalVotingParams { max_approval_coalesce_count: 5 },
 		..Default::default()
 	}
 }