This is the interface for storage miners to register pois keys and is in the second stage of storage miner registration, the first stage being the call to the interface.
// RegisterPoisKey register pois key, storage miner registration
// requires two stages, this is the second one.
//
// - poisKey: pois key
// - teeSignWithAcc: tee's sign with account
// - teeSign: tee's sign
// - teePuk: tee's work public key
//
// Return:
// - string: block hash
// - error: error message
//
// Note:
// - storage miners must complete the first stage to register for the second stage
func (c *ChainClient) RegisterPoisKey(poisKey PoISKeyInfo, teeSignWithAcc, teeSign types.Bytes, teePuk WorkerPublicKey) (string, error)
