Read and respect ~/.ssh/config

[vince-weka]

Is your feature request related to a problem? Please describe.
I'm using a ~/.ssh/config file to set what keys go to which hosts, and such. parallel-ssh does not read or process the config file, like the ssh command does.

Describe the solution you'd like
Read/parse, and automatically use settings in the config file when creating the SSHClient and ParallelSSHClient objects, unless specific things are overridden via arguments.

Describe alternatives you've considered
None, really. I'd like to move away from paramiko, and this is a bit of a blocker. I'll either have to stick with paramiko, or steal (ahem, borrow?) their code for parsing the config file and use that in my program... Maybe the same can be done here?

Additional context
None

[pkittenis]

Hi there,

Thanks for the interest. There is already an issue for doing this - #103 . PRs welcome.

Per that issue, it shouldn't be automatic but it should produce corresponding HostConfig entries from that config file. Libraries should not automatically use external config files from another application, that's a bad design.