private void executeOpAndVerifyWithSimpleOperationTracker(Collection<String> ids, RouterErrorCode expectedErrorCode)
      throws Exception {
    executeOpAndVerify(ids, expectedErrorCode, false, true);
  }
Generates {@link Properties} that includes initial configuration.
@param parallelism undelete request parallelism.
@return Properties
ambry-router/src/test/java/com/github/ambry/router/UndeleteManagerTest.java