default void ensureCloudEnv(Configuration conf) {
    Preconditions.checkState(LlapUtil.isCloudDeployment(conf), "Only supported in cloud based deployments");
  }
RPC endpoint for external clients - tcp traffic on this port should be opened on cloud.

@return
llap-client/src/java/org/apache/hadoop/hive/llap/registry/LlapServiceInstance.java