private static HelixPropertyStore<ZNRecord> createHelixPropertyStore(String clusterName, String zkConnectString) {
    Properties storeProps = new Properties();
    storeProps.setProperty("helix.property.store.root.path", "/" + clusterName + "/" + PROPERTYSTORE_STR);
    HelixPropertyStoreConfig propertyStoreConfig = new HelixPropertyStoreConfig(new VerifiableProperties(storeProps));
    // The number of zk endpoints has been validated in the ctor of HelixBootstrapUpgradeUtil, no need to check it again
    return CommonUtils.createHelixPropertyStore(zkConnectString, propertyStoreConfig, null);
  }
Create a {@link HelixPropertyStore} for given datacenter.

@param clusterName     the name of datacenter
@param zkConnectString
@return {@link HelixPropertyStore} associated with given dc.
ambry-clustermap/src/main/java/com/github/ambry/clustermap/HelixBootstrapUpgradeUtil.java