Code review comment for lp:~larryprice/libertine/libertine-shell-ssh

Ok, next issue:)

I'm trying this on a machine that I have never used ssh on. I get the following error:

$ libertine-shell -i test-lxd
Traceback (most recent call last):
  File "/usr/bin/libertine-shell", line 254, in <module>
    main()
  File "/usr/bin/libertine-shell", line 229, in main
    config.setup_public_keys(hostname)
  File "/usr/bin/libertine-shell", line 83, in setup_public_keys
    all_lines, host_line = self._ssh_config_lines(hostname)
  File "/usr/bin/libertine-shell", line 148, in _ssh_config_lines
    with open(config_path, 'r') as f:
FileNotFoundError: [Errno 2] No such file or directory: '/home/townsend/.ssh/config'