Adding Add-AzureRmVmssDataDisk and Remove-AzureRmVmssDataDisk

Author: hyonholee

src/ResourceManager/Compute/AzureRM.Compute.psd1

@@ -119,12 +119,12 @@ CmdletsToExport = 'Remove-AzureRmAvailabilitySet', 'Get-AzureRmAvailabilitySet',
                'Remove-AzureRmContainerService', 'Get-AzureRmContainerService', 
                'Get-AzureRmVmssVM', 'Set-AzureRmVmssVM', 
                'Add-AzureRmVmssAdditionalUnattendContent', 
-               'Add-AzureRmVmssExtension', 
+               'Add-AzureRmVmssExtension', 'Add-AzureRmVmssDataDisk',
                'Add-AzureRmVmssNetworkInterfaceConfiguration', 
                'Add-AzureRmVmssSecret', 'Add-AzureRmVmssSshPublicKey', 
                'Add-AzureRmVmssWinRMListener', 'New-AzureRmVmssConfig', 
                'New-AzureRmVmssIpConfig', 'New-AzureRmVmssVaultCertificateConfig', 
-               'Remove-AzureRmVmssExtension', 
+               'Remove-AzureRmVmssExtension', 'Remove-AzureRmVmssDataDisk',
                'Remove-AzureRmVmssNetworkInterfaceConfiguration', 
                'Set-AzureRmVmssOsProfile', 'Set-AzureRmVmssStorageProfile', 
                'New-AzureRmVmss', 'Update-AzureRmVmss', 'Stop-AzureRmVmss',