def build_knife_config
      FileUtils.mkdir_p(chef_config_path)
      File.binwrite(knife_config_path, ERB.new(knife_config_template).result(binding))
    end
def build_knife_config
      FileUtils.mkdir_p(chef_config_path)
      File.binwrite(knife_config_path, ERB.new(knife_config_template).result(binding))
    end
Writes out a knife.rb based on the settings in this configuration. Uses the
 `knife_config_path` and `chef_config_path` to determine where to write it.