We added azure storage client 2.0 to `Management` project in order to get the storage account in v2.0 from `SubscriptionData.GetCurrentStorageAccount()`.

The namespace `WindowsAzure.StorageClient` is for storage client 1.x and `WindowsAzure.Storage` is for storage client 2.0. In the previous version, the default namespace is `WindowsAzure.StorageClient, so we added this using statement to use storage client 2.0.