1-second epoch finality.

[Frozen]

added 2 params.Config

	IsOneSecondEpoch *big.Int `json:"is-one-second-epoch,omitempty"`

	IsRotationEachBlockEpoch *big.Int `json:"is-rotation-each-block-epoch"`

applied with

LeaderRotationInternalValidatorsEpoch: big.NewInt(2),
LeaderRotationExternalValidatorsEpoch: big.NewInt(2),
IsOneSecondEpoch:         big.NewInt(2),
IsRotationEachBlockEpoch: big.NewInt(2),

commission calculation

	// TwoSecStakedBlocks is the flat-rate block reward after epoch 360.
	// 7 ONE per block
	TwoSecStakedBlocks = numeric.NewDecFromBigInt(new(big.Int).Mul(
		big.NewInt(7*denominations.Nano), big.NewInt(denominations.Nano),
	))
	// HIP30StakedBlocks is the reward received after HIP-30 goes into
	// effect. It is simply double the TwoSecStakedBlocks reward, since
	// the number of shards is being halved and we keep emission
	// constant.
	HIP30StakedBlocks = numeric.NewDecFromBigInt(new(big.Int).Mul(
		big.NewInt(14*denominations.Nano), big.NewInt(denominations.Nano),
	))

	// OneSecStakedBlock is half of HIP30
	OneSecStakedBlock = numeric.NewDecFromBigInt(new(big.Int).Mul(
		big.NewInt(7*denominations.Nano), big.NewInt(denominations.Nano),
	))

1-second epoch finality.
Contains 67% sign power commission calculation.

[Frozen]

see #4771