Merge pull request #115 from huangpf/dev

Fix Extension Image Cmdlet
Add version parameter to service extension powershell cmdlets.
Update mandatory for version.
Merge pull request #116 from hyonholee/dev

Add version parameter to service extension powershell cmdlets.
Merge branch 'dev' of https://github.com/AzureRT/azure-sdk-tools into dev

Conflicts:
	src/ServiceManagement/Compute/Commands.ServiceManagement/Extensions/MicrosoftAntimalware/RemoveAzureServiceAntimalwareExtension.cs