Created by: tomalok
- switch to alpine v3.8
- add public_ip variable, setting to 'true' allows packer to build from outside AWS
- use smallest instance_type (t2.nano) and volume_size (1 GiB)
- eu-west-3 region is live; ap-northeast-3 requires subscription
- no longer need setup_staging_repos function...
- tiny-ec2-bootstrap is available in main since v3.8
- aws-ena-driver-vanilla is only available in edge/testing
- switched to linux-vanilla since linux-hardened is no longer available and linux-virt does not have NVME available
- TODO? make kernel choice selectable (significant memory/disk savings if linux-virt can be used)