* Update AWS hacking policy to enable ASG Tagging management
* aws_asg: Add tests for ASG Tagging (including idempotency)
* aws_asg: ignore sort order when comparing tags on the ASG (fix idempotency)
* ec2_asg: (integration tests) test for idempotency when managing metrics collection
* ec2_asg: sort list of enabled metrics to ensure clean comparisons.
