feat: (IAC-1104) Replace nfs-subdir-external-provisioner with nfs.csi.k8s.io

[Carus11]

Hi all
I propose we replace nfs-subdir-external-provisioner with the csi driver for nfs https://github.com/kubernetes-csi/csi-driver-nfs .
The nfs-subdir-external-provisioner suffers from a lack of maintainers and the kubernetes sig-storage group recommends people move away from use of this project to the csi driver for nfs. See meeting notes march 10th 2022: https://docs.google.com/document/d/1-8KEG8AjAgKznS9NFm3qWqkGyCHmvU6HVl0sk5hwoAE/edit?pli=1#heading=h.39gn7e729u4t

This lack of maintainers was especially evident earlier this year when users tried to address several security scan items in the nfs-subdir-external-provisioner container image. It also appears to be a candidate for deprecation and in slack they also recommend against using it.

[nealman13]

I tried replacing nfs-subdir-external-provisioner with nfs.csi.k8s.io, and then deploying Viya 2023.08.

Everything worked except for the sas-pyconfig job. The sas-pyconfig pods would fail with the following message:

{"level":"info","version":1,"source":"pyconfig","messageKey":"Start of Pyconfig","messageParameters":{},"properties":{"caller":"go/main.go:1280"},"timeStamp":"2023-08-24T14:56:41.862470+00:00","message":"Start of Pyconfig [elapsed time:0m:0s:0ms name:startup]"} {"level":"fatal","version":1,"source":"pyconfig","messageKey":"Cannot write to PVC configured in global.pvc. Path: /opt/sas/viya/home/sas-pyconfig","messageParameters":{},"properties":{"caller":"go/main.go:1290"},"timeStamp":"2023-08-24T14:56:42.250099+00:00","message":"Cannot write to PVC configured in global.pvc. Path: /opt/sas/viya/home/sas-pyconfig [elapsed time:0m:0s:388ms name:validateData]"}