Added default_content function
Added default_content function

Usage example:

  $config_file_template      = undef,
  $config_file_content       = undef,

  $real_config_file_content = default_content($config_file_content,
$config_file_template)

voxpupuli/puppet-extlib,puppet-community/puppet-extlib,duritong/puppet-extlib