Allow import of AWS managed instances generated by hybrid activations

[ghost]

This issue was originally opened by @tamkawing as hashicorp/terraform#28259. It was migrated here as a result of the provider split. The original body of the issue is below.

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Current Terraform Version

0.14.8

Use-cases

Would like to use Terraform to import/manage AWS Managed Instances in SSM Fleet Manager (eg, tagging) that weren't created with Terraform (https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/ssm_activation) aka. created manually.

Attempted Solutions

Terraform has a resource aws_ssm_activation (https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/ssm_activation) that supports tagging, but 1) would likely depend on having first activated the managed instances with Terraform and thus won't allow us to manage existing activated systems 2) would not allow unique tags in the case of multiple activations at once. aws_instance does not appear to apply to instances created from hybrid activations that only Fleet Manager knows about, either.

Proposal

Having something like aws_ssm_managedinstance that could be imported, and then managed with something like

resource "aws_ssm_managedinstance" "server" {
 
  tags = {
    Name = "server_name"
    Owner = "somebody"
    Patch Group = "RHEL_prod_1"
  }

}

References

[ORuessel]

@breathingdust are there any new information is this planned ? thanks and best regards