Ignore Terminated EC2 Instances

[etoews]

Even though EC2 instances have been terminated, they still appear in the dry-run report and there's no way to discern them from non-terminated instances. It makes the dry-run report a bit misleading and it makes users do extra investigation.

When doing a real run to delete resources, EC2 instances that are already terminated appear to be instantaneously deleted again. That too is a bit misleading.

P.S. awsweeper is a great piece of software! Very useful. Thanks for making it available.