code: function getRedisOptions() {
      var defaults = {
        debug: false,
        certExpiry: 100 * 60 * 60 * 24, // all cert data expires after 100 days
        redisOptions: {
          db: 3,
          retry_strategy: function(options) {
            // reconnect after 60 seconds, keep trying forever
            return 60 * 1000;
          }
        }
      };
      var mergedOptions = _.merge(defaults, options);
  
      _debug('le-store-redis.getRedisOptions', mergedOptions);
  
      return mergedOptions;
    }
docs: Gets the default options merged with the options passed to the plugin.
  
  @return {Object} default options overlayed with provided options.