juicefs sync can't recognize the hosts defined in .ssh/config

[zhoucheng361]

What happened:

chengdeMacBook-Pro:juicefs3 chengzhou$ ls sync/
chengdeMacBook-Pro:juicefs3 chengzhou$ ./juicefs-1.0.2 sync bench1:/root/sync .
2022/12/21 14:38:39.230118 juicefs[57609] <ERROR>: connect to bench1 failed: dial tcp: lookup bench1: no such host [sftp.go:539]
2022/12/21 14:38:39.232356 juicefs[57609] <FATAL>: dial tcp: lookup bench1: no such host [main.go:31]
chengdeMacBook-Pro:juicefs3 chengzhou$ rsync bench1:/root/sync . -a
chengdeMacBook-Pro:juicefs3 chengzhou$ ls sync/
abc abc@def
chengdeMacBook-Pro:juicefs3 chengzhou$ cat ~/.ssh/config 
Host bench1
  HostName 8.210.231.144
  User root
  ForwardAgent yes

What you expected to happen: people may define ssh hosts in ~/.ssh/config file, juicefs sync should recognize the config as rsync do.

How to reproduce it (as minimally and precisely as possible):

Anything else we need to know?

Environment:

• JuiceFS version (use juicefs --version) or Hadoop Java SDK version:
• Cloud provider or hardware configuration running JuiceFS:
• OS (e.g cat /etc/os-release):
• Kernel (e.g. uname -a):
• Object storage (cloud provider and region, or self maintained):
• Metadata engine info (version, cloud provider managed or self maintained):
• Network connectivity (JuiceFS to metadata engine, JuiceFS to object storage):
• Others:

[davies]

That's too complicated, we may not do this in near future.