CSIMigrationAzureDisk deprecated in k8s 1.25

[Adam Dyess]

kubernetes-control-plane, kubernetes-worker, and calico are all stuck in Waiting status:

k8s-cp - Waiting for auth-webhook tokens
k8s-worker - Waiting for cluster credentials.
calico - Waiting to retry Calico node configuration

kube-apiserver fails to start with:

Error: invalid argument "CSIMigrationAzureDisk=false" for "--feature-gates" flag: cannot set feature gate CSIMigrationAzureDisk to false, feature is locked to true

Per release notes[1], the CSIMigrationAzureDisk features are now GA and locked to true. We will need to remove the code in kubernetes-control-plane and kubernetes-worker that sets those.

[1]: https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG/CHANGELOG-1.25.md#feature

[Adam Dyess (addyess)]

Since we're no longer able to disable those feature gates, in-tree cloud provider storage on Azure will no longer work.

[Adam Dyess (addyess)]

https://github.com/charmed-kubernetes/charm-kubernetes-control-plane/pull/251
https://github.com/charmed-kubernetes/layer-kubernetes-common/pull/35

[Adam Dyess (addyess)]

Very Similar bug to LP#1988186

[Adam Dyess (addyess)]

Cherry-Picks:
https://github.com/charmed-kubernetes/layer-kubernetes-common/commit/8ccc7490f8df131e1e2b05c82123d7e2842d9a8a
https://github.com/charmed-kubernetes/charm-kubernetes-control-plane/commit/2fd98e8f5f42d0462c80f28fa3d056786b40c875