Latest version in 3.3 branch is 3.3.23, but it's broken, so we use previous
stable version.
Switch to official etcd gcr.io registry, early support for arm64.
Move `etcd` service to run in system containerd.
Signed-off-by: Andrey Smirnov <smirnov.andrey@gmail.com>
This can be expanded one day to air-gapped solution, but gives good
starting point for those who run clusters locally.
Signed-off-by: Andrey Smirnov <smirnov.andrey@gmail.com>