Starting with 1.22.X, all KubeZero nodes will boot from custom pre-baked AMIs. These AMIs will be provided and shared by the Zero Down Time AWS account.
This change elimitates *ALL* dependencies at boot time other than container registries. Gone are the days when Ubuntu, SuSE or Github decided to ruin your morning coffee.
While we are at it, KubeZero also moves from Ubuntu 20.04LTS to Alpine 3.15 as its base OS.
## Misc
- new node label `node.kubernetes.io/instance-type` for all nodes containing the EC2 instance type
- container runtime migrated from runc to crun, reduces memory overhead per pod from 16M to 4M, more info: https://www.redhat.com/sysadmin/introduction-crun