HDInsight Cluster doesn't support Storage Container with Private Link

Per below error message from API side, seems it indicates that HDInsight Cluster doesn't support Storage Container with Private Link. But per the [azure doc](https://docs.microsoft.com/en-us/azure/hdinsight/hdinsight-restrict-public-connectivity#add-private-link-connectivity-to-cluster-dependent-resources-optional), seems this scenario is supported by Service API. So could you take a look this issue? Thanks.

Error message:
```
hdinsight.ClustersClient#Create: Failure sending request: StatusCode=400 -- Original Error: Code="BadRequest" Message="User input validation failed. Errors: The request payload is invalid. Endpoint type 'privatelink' in url wasb://spark-abs-01@ababgstreamspark.privatelink.blob.core.windows.net is neither 'blob' or 'dfs',User input validation failed. Errors: The request payload is invalid. Endpoint type 'privatelink' in url wasb://spark-abs-01@ababgstreamspark.privatelink.blob.core.windows.net is neither 'blob' or 'dfs',User input validation failed. Errors: The request payload is invalid. Endpoint type 'privatelink' in url wasb://spark-abs-01@ababgstreamspark.privatelink.blob.core.windows.net is neither 'blob' or 'dfs'"
```

Start with the error message in the issue and compare the reported request URL with the linked Azure HDInsight private-link documentation. Trace the HDInsight cluster create specification and its endpoint validation; done means the documented private-link storage-container scenario is represented correctly and no longer produces the reported validation error.

Written by the indexing model from the issue text.