Nagios Client.
@constructor
@param {Object} options The options.
function Nagios(options, log) {
  var parsed = url.parse(options.url);

  // Inject auth into the URL
  delete parsed.host;
  parsed['auth'] = sprintf('%s:%s', options.username, options.password);

  this._url = url.format(parsed);
  this._options = options;
  this.log = log || logmagic.local('nagios');
}