aws: some default values are not properly imported

[xlr-8]

We've noticed that some default variables from Terraform or not directly imported via their importer method - some are already referenced as bug from the CLI importer -:

• EC2 Security groups aws_security_group: revoke_rules_on_delete conflict with 'terraform plan' hashicorp/terraform-provider-aws#2329
• Route53 zone - force_destroy field
• EC2 Instance root_device_block_termination
• IAM AWS IAM user import doesn't set force_destroy hashicorp/terraform-provider-aws#7859
• Cloudfront retain on delete hashicorp/terraform-provider-aws@b46ceca
• RDS db_instance skip final snapshot https://github.com/terraform-providers/terraform-provider-aws/blob/master/aws/resource_aws_db_instance.go#L1642
• S3 bucket import aws_s3_bucket does not store important attributes like acl hashicorp/terraform-provider-aws#6193