2.0.0
Allow for security group to be created and deleted without failing.
sg_name_prefix variable add to allow for custom name.
Breaking change:
This will require to create a new security group and old ecs task will be blocking deletion of old security group. This can be solved by removing manually old tasks. New tasks will be running at that stage so application will not experience any downtime. This is applicable when upgrading module from 1.X to 2.X.