…DK method

```
$ acctests azurerm TestAccAzureRMStorageContainer_
=== RUN   TestAccAzureRMStorageContainer_basic
=== PAUSE TestAccAzureRMStorageContainer_basic
=== RUN   TestAccAzureRMStorageContainer_requiresImport
--- SKIP: TestAccAzureRMStorageContainer_requiresImport (0.00s)
    resource_arm_storage_container_test.go:44: Skipping since resources aren't required to be imported
=== RUN   TestAccAzureRMStorageContainer_update
=== PAUSE TestAccAzureRMStorageContainer_update
=== RUN   TestAccAzureRMStorageContainer_disappears
=== PAUSE TestAccAzureRMStorageContainer_disappears
=== RUN   TestAccAzureRMStorageContainer_root
=== PAUSE TestAccAzureRMStorageContainer_root
=== CONT  TestAccAzureRMStorageContainer_basic
--- PASS: TestAccAzureRMStorageContainer_basic (135.22s)
=== CONT  TestAccAzureRMStorageContainer_root
--- PASS: TestAccAzureRMStorageContainer_root (104.49s)
=== CONT  TestAccAzureRMStorageContainer_disappears
--- PASS: TestAccAzureRMStorageContainer_disappears (117.15s)
=== CONT  TestAccAzureRMStorageContainer_update
--- PASS: TestAccAzureRMStorageContainer_update (163.77s)
PASS
ok  	github.com/terraform-providers/terraform-provider-azurerm/azurerm	520.686s
```

…es fields