Adds launch_template to aws_autoscaling_group data source

[gdavison]

Adds launch_template to aws_autoscaling_group data source.

Closes #16289

Release note for CHANGELOG:

* data-source/aws_autoscaling_group: Adds `launch_template` attribute

Output from acceptance testing:

$ make testacc TESTARGS='-run=TestAccAwsAutoScalingGroupDataSource_'

--- PASS: TestAccAwsAutoScalingGroupDataSource_basic (48.47s)
--- PASS: TestAccAwsAutoScalingGroupDataSource_launchTemplate (68.97s)

[anGie44]

Looks great 👍 (aside from merge conflict in test file)

Output of acceptance tests:

--- PASS: TestAccAwsAutoScalingGroupDataSource_basic (29.18s)
--- PASS: TestAccAwsAutoScalingGroupDataSource_launchTemplate (32.99s)

[anGie44]

not sure if we need to avoid the hardcoded instance type here, but we could also use the testAccAvailableEc2InstanceTypeForRegion("t3.micro", "t2.micro") config and ref here

[ghost]

This has been released in version 3.22.0 of the Terraform AWS 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 for triage. Thanks!

[ghost]

I'm going to lock this issue because it has been closed for 30 days ⏳. This helps our maintainers find and focus on the active issues.

If you feel this issue should be reopened, we encourage creating a new issue linking back to this one for added context. Thanks!