data.azurerm_container_registry: added missing tags property

[katbyte]

• fixed a few datasource file names to be consistent with the rest
• fixes small typo in `` test

fixes:

Test ended in panic.

------- Stdout: -------
=== RUN   TestAccDataSourceAzureRMContainerRegistry_basic
=== PAUSE TestAccDataSourceAzureRMContainerRegistry_basic
=== CONT  TestAccDataSourceAzureRMContainerRegistry_basic

------- Stderr: -------
panic: Invalid address to set: []string{"tags"}

[bflad]

LGTM! 🚀

[katbyte]

tests:

==> Fixing source code with gofmt...
gofmt -s -w ./azurerm
==> Checking that code complies with gofmt requirements...
TF_ACC=1 go test ./azurerm -v -test.run=TestAccDataSourceAzureRMContainerRegistry_basic -timeout 180m -ldflags="-X=github.com/terraform-providers/terraform-provider-azurerm/version.ProviderVersion=acc"
=== RUN   TestAccDataSourceAzureRMContainerRegistry_basic
=== PAUSE TestAccDataSourceAzureRMContainerRegistry_basic
=== CONT  TestAccDataSourceAzureRMContainerRegistry_basic
--- PASS: TestAccDataSourceAzureRMContainerRegistry_basic (96.51s)
PASS
ok  	github.com/terraform-providers/terraform-provider-azurerm/azurerm	98.143s

==> Fixing source code with gofmt...
gofmt -s -w ./azurerm
==> Checking that code complies with gofmt requirements...
TF_ACC=1 go test ./azurerm -v -test.run=TestAccAzureRMVirtualMachineScaleSet_upgradeModeUpdate -timeout 180m -ldflags="-X=github.com/terraform-providers/terraform-provider-azurerm/version.ProviderVersion=acc"
=== RUN   TestAccAzureRMVirtualMachineScaleSet_upgradeModeUpdate
=== PAUSE TestAccAzureRMVirtualMachineScaleSet_upgradeModeUpdate
=== CONT  TestAccAzureRMVirtualMachineScaleSet_upgradeModeUpdate
--- PASS: TestAccAzureRMVirtualMachineScaleSet_upgradeModeUpdate (588.91s)
PASS
ok  	github.com/terraform-providers/terraform-provider-azurerm/azurerm	589.889s

[ghost]

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