azurerm_data_factory_integration_runtime_self_hosted - fix the bug that auth keys are not exported

[ms-henglu]

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Description

This PR fixes the bug if the self hosted integration runtime has an empty "typeProperties" block, the auth keys couldn't be exported.

Here's how to create the target integration runtime:

resource "azapi_resource" "ir" {
  type      = "Microsoft.DataFactory/factories/integrationRuntimes@2018-06-01"
  parent_id = azurerm_data_factory.test.id
  name      = "henglu314"
  body = jsonencode({
    properties = {
      description = ""
      type        = "SelfHosted"
      typeProperties = {

      }
    }
  })
}

It seems also happens when upgrading the provider from 2.xx to 3.xx.

Testing Logs/Evidence

Related Issue(s)

Fixes #16540

Change Log

Below please provide what should go into the changelog (if anything) conforming to the Changelog Format documented here.

• azurerm_resource - support for the thing1 property [GH-00000]

This is a (please select all that apply):

• Bug Fix
• New Feature (ie adding a service, resource, or data source)
• Enhancement
• Breaking Change

Note

If this PR changes meaningfully during the course of review please update the title and description as required.

[katbyte]

LGTM 🎨

[katbyte]

gtg once the merge conflict is fixed

[ms-henglu]

Thanks @katbyte , conflicts resolved!

[github-actions]

This functionality has been released in v3.97.1 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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