Rdfe44 compute changes

the following cmdlets have been modified
Set-AzurePublicIp
Get-AzureRole
Get-AzureDeployment
Add-AzureEndpoint
Get-AzureEndpoint
Set-AzureLoadBalancedEndpoint

The following cmdlets have been added
Add-AzureDns
Set-AzureDns
Remove-AzureDns
Update-AzureInternalLoadBalancer