As an OKD user I'd like to install it on Raspberry Pi 4.

RPi4 has 8GB RAM, so we'll need to strip some components which prevent us from bootstrapping / installing:

• Add overrides to disable Prometheus (we should advise to use external monitoring like Grafana Agent)
• Use bootstrap-in-place to have the same node being reused for single master installs

Depends on arm64 payload (afaik we have it for SCOS already, right?). For testing we could use AWS arm64 nodes

Planning:

• [x] Prepare a set of manifests to make OKD run on x86_64 8GB nodes
  Enable swap support instead? Needs hacked installer as it checks resources on AWS/GCP/Azure now
  https://github.com/vrutkovs/okd-centos9-rebuild/tree/slim
• Build arm64 payload
• Run installation w/ custom manifests on AWS arm64
• Test on real hardware (3 masters + 2 workers)
• Test on compact clusters (3 masters, 0 workers)
• Test single node bootstrap-in-place