r\managed_disk: Add support for trusted_launch_enabled

[myc2h6o]

• Add support for https://docs.microsoft.com/en-us/rest/api/compute/disks/create-or-update#disksecurityprofile, which is part of the coverage tasks for managed_disk.
• This property is part of the disk security profile, which can only be decided at creation time, and is used to specify whether to use trusted launch feature when using this disk as an OS disk.
• It can only be set to TrustedLaunch, and requires create_option to be FromImage or Import
• It can only be used with a gen2 image, in the new test case, UbuntuServer 18_04-LTS-gen2 is used as the image
• Test Result:
  $ TF_ACC=1 go test -v ./internal/services/compute -run=TestAccAzureRMManagedDisk_create_withTrustedLaunchEnabled -timeout 60m -ldflags="-X=github.com/hashicorp/terraform-provider-azurerm/version.ProviderVersion=acc"
  === RUN TestAccAzureRMManagedDisk_create_withTrustedLaunchEnabled
  === PAUSE TestAccAzureRMManagedDisk_create_withTrustedLaunchEnabled
  === CONT TestAccAzureRMManagedDisk_create_withTrustedLaunchEnabled
  --- PASS: TestAccAzureRMManagedDisk_create_withTrustedLaunchEnabled (333.34s)
  PASS
  ok github.com/hashicorp/terraform-provider-azurerm/internal/services/compute 334.051s

[tombuildsstuff]

hey @myc2h6o

Thanks for this PR.

I've taken a look through and left a few comments inline - if we can fix those up then we should be good to go 👍

Thanks!

[myc2h6o]

@tombuildsstuff thanks for reviewing the change! I've update the pr according to your suggestions. Please take another look.

[katbyte]

Thanks @myc2h6o - LGTM 🙌

[github-actions]

This functionality has been released in v2.83.0 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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