fileserver: Connection reset by peer

[jayl1e]

during curl both get and post: curl: (56) Recv failure: Connection reset by peer

[wuhuizuo]

@purelind and @wuhuizuo talked about this offline, and we suggest refactor uploading and downloading steps:
use ks3util tool rather than "curl" or "wget" tools.

[purelind]

Example to upload or downlod file with ks3util:

• upload single file

# 例1: 上传后的对象为ks3://samplebucket/abc/sample.txt
./ks3util cp /home/sample.txt ks3://samplebucket/abc/

# 例2: 上传后的对象为ks3://samplebucket/abc
./ks3util cp /home/sample.txt ks3://samplebucket/abc

• download single file

./ks3util cp ks3://samplebucket/src-prefix/sample.txt local-dir/sample-file.txt

[purelind]

For more info please refer https://docs.ksyun.com/documents/42067

[purelind]

build pipeline need update:

1. build-common
2. docker-common