Add period 0 deadline timeout parameter to consensus params. (#618)

protocol/config/consensus.go

@@ -143,6 +143,8 @@ type ConsensusParams struct {
 	// time for nodes to wait for block proposal headers for period = 0, value should be configured to suit best case
 	// critical path
 	AgreementFilterTimeoutPeriod0 time.Duration
+	// Duration of the second agreement step for period=0, value should be configured to suit best case critical path
+	AgreementDeadlineTimeoutPeriod0 time.Duration
 
 	FastRecoveryLambda time.Duration // time between fast recovery attempts
 
@@ -707,8 +709,9 @@ func initConsensusProtocols() {
 		DownCommitteeSize:      10000,
 		DownCommitteeThreshold: 7750,
 
-		AgreementFilterTimeout:        4 * time.Second,
-		AgreementFilterTimeoutPeriod0: 4 * time.Second,
+		AgreementFilterTimeout:          4 * time.Second,
+		AgreementFilterTimeoutPeriod0:   4 * time.Second,
+		AgreementDeadlineTimeoutPeriod0: Protocol.BigLambda + Protocol.SmallLambda,
 
 		FastRecoveryLambda: 5 * time.Minute,
 
@@ -1242,11 +1245,20 @@ func initConsensusProtocols() {
 	// ConsensusFuture is used to test features that are implemented
 	// but not yet released in a production protocol version.
 	vFuture := v38
+
 	vFuture.ApprovedUpgrades = map[protocol.ConsensusVersion]uint64{}
 
 	vFuture.LogicSigVersion = 10 // When moving this to a release, put a new higher LogicSigVersion here
 	vFuture.EnableLogicSigCostPooling = true
 
+	vFuture.AgreementDeadlineTimeoutPeriod0 = 4 * time.Second
+
+	vFuture.StateProofBlockHashInLightHeader = true
+
+	// Setting DynamicFilterTimeout in vFuture will impact e2e test performance
+	// by reducing round time. Hence, it is commented out for now.
+	// vFuture.DynamicFilterTimeout = true
+
 	Consensus[protocol.ConsensusFuture] = vFuture
 
 	// vAlphaX versions are an separate series of consensus parameters and versions for alphanet