do not log password in ssh connection output

[marcparadise]

This addresses an immediate need for delivery CLIP, but a better longer-term approach may be to make something like:

class ConnectionOptions < Hash 
  def to_s
    # find any  key => .*password.* with value type String  here and obscure them. 
  end
end

I didn't take that for this change because it'd be a mid-sized refactor.

ping @arlimus @srenatus

[arlimus]

Awesome! Could you please help with the linting errors and we'll get this merged :)

[srenatus]

LGTM! 🎉

[srenatus]

Thanks a lot, @marcparadise!