Bugfix: azurerm_data_factory_dataset_binary - Make blob path/filename optional

[henrymcconville]

==> Checking that code complies with gofmt requirements...
==> Checking that Custom Timeouts are used...
==> Checking that acceptance test packages are used...
TF_ACC=1 go test -v ./azurerm/internal/services/datafactory/data_factory_dataset_binary_resource_test.go  -timeout 60m -ldflags="-X=github.com/terraform-providers/terraform-provider-azurerm/version.ProviderVersion=acc"
=== RUN   TestAccDataFactoryDatasetBinary_blob
=== PAUSE TestAccDataFactoryDatasetBinary_blob
=== RUN   TestAccDataFactoryDatasetBinary_blob_with_filepath
=== PAUSE TestAccDataFactoryDatasetBinary_blob_with_filepath
=== RUN   TestAccDataFactoryDatasetBinary_http
=== PAUSE TestAccDataFactoryDatasetBinary_http
=== RUN   TestAccDataFactoryDatasetBinary_sftp
=== PAUSE TestAccDataFactoryDatasetBinary_sftp
=== RUN   TestAccDataFactoryDatasetBinary_sftpComplete
=== PAUSE TestAccDataFactoryDatasetBinary_sftpComplete
=== CONT  TestAccDataFactoryDatasetBinary_blob
=== CONT  TestAccDataFactoryDatasetBinary_sftp
=== CONT  TestAccDataFactoryDatasetBinary_http
=== CONT  TestAccDataFactoryDatasetBinary_sftpComplete
=== CONT  TestAccDataFactoryDatasetBinary_blob_with_filepath
--- PASS: TestAccDataFactoryDatasetBinary_http (110.23s)
--- PASS: TestAccDataFactoryDatasetBinary_sftpComplete (113.74s)
--- PASS: TestAccDataFactoryDatasetBinary_sftp (115.86s)
--- PASS: TestAccDataFactoryDatasetBinary_blob_with_filepath (126.59s)
--- PASS: TestAccDataFactoryDatasetBinary_blob (127.02s)
PASS
ok  	command-line-arguments	128.510s

[katbyte]

Thanks @henrymcconville - LGTM 🚀

[github-actions]

This functionality has been released in v2.70.0 of the Terraform Provider. Please see the Terraform documentation on provider versioning or reach out if you need any assistance upgrading.

For further feature requests or bug reports with this functionality, please create a new GitHub issue following the template. Thank you!

[github-actions]

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