KeyValue parameter not found for 201-hdinsight-datalake-store-azure-storage

[201-hdinsight-datalake-store-azure-storage](https://github.com/Azure/azure-quickstart-templates/tree/master/201-hdinsight-datalake-store-azure-storage)

### Issue Details

When I try to create a service principal using the certificate

PS C:\Windows\system32> $application = New-AzureRmADApplication -DisplayName $certName -HomePage "https://$clusterName.azurehdinsight.net" -IdentifierUris "https://$clusterName.azurehdinsight.net" -KeyValue $credential -KeyType "AsymmetricX509Cert" -KeyUsage "Verify" -StartDate $certStartDate -EndDate $certEndDate

```
New-AzureRmADApplication : A parameter cannot be found that matches parameter name 'KeyValue'.
At line:3 char:26
+ -KeyValue $credential -KeyType "AsymmetricX5 ...
+ ~~~~~~~~~
+ CategoryInfo : InvalidArgument: (:) [New-AzureRmADApplication], ParameterBindingException
+ FullyQualifiedErrorId : NamedParameterNotFound,Microsoft.Azure.Commands.ActiveDirectory.NewAzureADApplicationCom
mand

```

### Repro steps (*if necessary, delete otherwise*)
As per the instructions in the Readme file
1) Created the certificate
2) Created a service principal using the certificate

Start with the README for 201-hdinsight-datalake-store-azure-storage and reproduce the documented service-principal command in the reported Azure PowerShell context. Verify the command's supported parameters and update the README so its certificate-based setup instructions no longer produce the reported KeyValue error.

Written by the indexing model from the issue text.