CLUO doesn't work on k8s 1.16

[betermieux]

Since DaemonSets are moved from 'extensions/v1beta1' to 'apps/v1', the agent doesn't exclude itself from node draining anymore and kills itself before calling reboot. This results in a continuously draining and repopulating node. The culprit seems to be:

container-linux-update-operator/pkg/drain/drain.go

Line 74 in 4bb1486

return kc.ExtensionsV1beta1().DaemonSets(namespace).Get(controllerRef.Name, v1meta.GetOptions{})

If I find some time, I will send a pull-request.

[sdlarsen]

As a work-around (while waiting for #197), it's possible to enable serving of the deprecated resource names by adding this to the api-server: --runtime-config=extensions/v1beta1/daemonsets=true

[mleklund]

Having this issue as well.