This allows Storage Service Encryption to be enabled.
TF_ACC=1 go test ./builtin/providers/azurerm -v -run TestAccAzureRMStorageAccount -timeout 120m
=== RUN TestAccAzureRMStorageAccount_importBasic
--- PASS: TestAccAzureRMStorageAccount_importBasic (139.00s)
=== RUN TestAccAzureRMStorageAccount_basic
--- PASS: TestAccAzureRMStorageAccount_basic (151.03s)
=== RUN TestAccAzureRMStorageAccount_blobEncryption
--- PASS: TestAccAzureRMStorageAccount_blobEncryption (149.94s)
PASS
ok github.com/hashicorp/terraform/builtin/providers/azurerm 440.051s