Alpine 3.16 Released

alpine.pkr.hcl

• fix setup-ssh in QEMU boot command

build

• add 'rollback' target, which when used with --revise will clean up any imported but unpublished images (use before 'build --clean configs')
• fix download of UEFI firmware - ovmf apk split aarch64 to new aavmf apk

configs

• alpine.conf - remove 3.12, add 3.16
• add ..._name to dimensional configs
• add cloud_(image|launch)_url

image_configs.py

• methods to resolve (image|launch)_url values

clouds/aws.py

• warn if setting image deprecation fails, but continue