docs: function mongoConnectionStringOS2(cb) {
    debug('Running in OpenShift 2, constructing db connection string from additional env vars');
    var connectionString,
      host = process.env.OPENSHIFT_MONGODB_DB_HOST,
      user = process.env.OPENSHIFT_MONGODB_DB_USERNAME,
      pass = process.env.OPENSHIFT_MONGODB_DB_PASSWORD,
      port = process.env.OPENSHIFT_MONGODB_DB_PORT,
      dbname = process.env.OPENSHIFT_APP_NAME;
    connectionString = mongodbUri.format({
      username: user,
      password: pass,
      hosts: [
        {
          host: host,
          port: port
        }
      ],
      database: dbname
    });
    process.env.FH_MONGODB_CONN_URL = connectionString;
    return cb(undefined, process.env.FH_MONGODB_CONN_URL);
  
  }