Add v2epoch constant to table

internal/configs/sharding/mainnet.go

@@ -69,7 +69,7 @@ func (ms mainnetSchedule) ConsensusRatio() float64 {
 	return mainnetConsensusRatio
 }
 
-var mainnetReshardingEpoch = []*big.Int{big.NewInt(0), big.NewInt(mainnetV1Epoch)}
+var mainnetReshardingEpoch = []*big.Int{big.NewInt(0), big.NewInt(mainnetV1Epoch), big.NewInt(mainnetV2Epoch)}
 var mainnetV0 = MustNewInstance(4, 150, 112, genesis.HarmonyAccounts, genesis.FoundationalNodeAccounts, mainnetReshardingEpoch)
 var mainnetV1 = MustNewInstance(4, 152, 112, genesis.HarmonyAccounts, genesis.FoundationalNodeAccountsV1, mainnetReshardingEpoch)
 var mainnetV2 = MustNewInstance(4, 200, 148, genesis.HarmonyAccounts, genesis.FoundationalNodeAccountsV2, mainnetReshardingEpoch)