WAD 1.1 IaaS cmdlet

Integrating the IaaS cmdlet
WAD 1.1 IaaS cmdlet

- Added endpoint suffix to AzureStorageContext.
- Diasgnostics Set cmdlet not takes a StorageContext instead of a
storage account name
WAD 1.1 IAAS cmdlet

merge and resolved conflicts
Merge pull request #2613 from ericprun/dev

WAD 1.1 IaaS cmdlet