@Override
  public QuotaManager getQuotaManager() {
    return quotaManager;
  }
@param quotaConfig {@link QuotaConfig} object.
@param quotaRecommendationMergePolicy {@link QuotaRecommendationMergePolicy} object.
@param accountService {@link AccountService} object.
@param accountStatsStore {@link AccountStatsStore} object.
@param metricRegistry {@link MetricRegistry} object.
@param routerConfig {@link RouterConfig} object.
@throws ReflectiveOperationException
ambry-quota/src/main/java/com/github/ambry/quota/AmbryQuotaManagerFactory.java