Ensure there are no unnamed AWS EC2 instances

AWS EC2 instances without a name may cause confusion during resource audit and maintenance.

In AWS Console -

1. Sign in to AWS Console and go to the EC2 dashboard.
2. Select the region.
3. In the navigation pane, choose a resource type.
4. Under Add Tag, enter the tag key and value and choose Add Tag.
5. Click Save.

In Terraform -

1. For the aws_instance resource, configure the tags block with a Name field.

References:
https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/Using_Tags.html
https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/instance#tags