lotus version 1.4.1 AddPiece 优化

lotus-miner --version
lotus-miner version 1.4.1+git.e5efe57c9.dirty

• AddPiece 1分钟26秒

# cat /var/log/worker/worker.log | grep "acquired sector"
2021-01-21T23:32:17.407+0800	DEBUG	advmgr	sector-storage/worker_local.go:129
2021-01-21T23:33:43.832+0800	DEBUG	advmgr	sector-storage/worker_local.go:129