[stn] enable 40% ext voting power on stn

starting from epoch 10

Signed-off-by: Leo Chen <leo@harmony.one>

internal/configs/sharding/stress.go

@@ -16,8 +16,8 @@ var StressNetSchedule stressnetSchedule
 type stressnetSchedule struct{}
 
 const (
-	// ~304 sec epochs for P2 of open staking
+	// ~0.5 hour per epoch
-	stressnetBlocksPerEpoch = 38
+	stressnetBlocksPerEpoch = 1024
 
 	stressnetVdfDifficulty = 10000 // This takes about 20s to finish the vdf
 
@@ -29,6 +29,8 @@ const (
 
 func (ss stressnetSchedule) InstanceForEpoch(epoch *big.Int) Instance {
 	switch {
+	case params.StressnetChainConfig.IsSixtyPercent(epoch):
+		return stressnetV2
 	case epoch.Cmp(params.StressnetChainConfig.StakingEpoch) >= 0:
 		return stressnetV1
 	default: // genesis
@@ -84,3 +86,4 @@ var stressnetReshardingEpoch = []*big.Int{
 
 var stressnetV0 = MustNewInstance(2, 10, 10, numeric.OneDec(), genesis.TNHarmonyAccounts, genesis.TNFoundationalAccounts, stressnetReshardingEpoch, StressNetSchedule.BlocksPerEpoch())
 var stressnetV1 = MustNewInstance(2, 30, 10, numeric.MustNewDecFromStr("0.9"), genesis.TNHarmonyAccounts, genesis.TNFoundationalAccounts, stressnetReshardingEpoch, StressNetSchedule.BlocksPerEpoch())
+var stressnetV2 = MustNewInstance(2, 30, 10, numeric.MustNewDecFromStr("0.6"), genesis.TNHarmonyAccounts, genesis.TNFoundationalAccounts, stressnetReshardingEpoch, StressNetSchedule.BlocksPerEpoch())

internal/params/config.go

@@ -134,7 +134,7 @@ var (
 		QuickUnlockEpoch:           big.NewInt(0),
 		FiveSecondsEpoch:           big.NewInt(0),
 		TwoSecondsEpoch:            big.NewInt(0),
-		SixtyPercentEpoch:          EpochTBD, // Never enable it for STN as STN has no external validator setup
+		SixtyPercentEpoch:          big.NewInt(10),
 		RedelegationEpoch:          big.NewInt(0),
 		EIP155Epoch:                big.NewInt(0),
 		S3Epoch:                    big.NewInt(0),