Fix:
Set-AzureVMImageOSDiskConfig -HostCaching not populating the input value;
Save-AzureVMImage's check on same image name in the other type.
Remove 'None' from HostCaching option for setting OS disk
Merge pull request #104 from huangpf/images

Fix: Save/Update-AzureVMImage
Merge branch 'release-0.8.2' of https://github.com/Azure/azure-sdk-tools into dev
Fix Get-AzureDeployment's ILB returned name
Merge pull request #2539 from AzureRT/dev

Fix Save-AzureVMImage & Set-AzureVMImageOSDiskConfig