fix: node driver registrar socket path

[dongjiang1989]

The current implementation doesn't respect .Values.agent.kubelet_dir and doesn't work in case kubelet uses a non-default directory.

uses /apps/data/kubelet instead of /var/lib/kubelet

logs

E0914 11:29:09.031771  246315 nestedpendingoperations.go:301] Operation for "{volumeName:kubernetes.io/csi/local.csi.aliyun.com^local-b6daea4e-222a-42d9-9a1c-c998ea8452df podName: nodeName:}" failed. No retries permitted until 2023-09-14 11:31:11.031748089 +0800 CST m=+75524.201713195 (durationBeforeRetry 2m2s). Error: "MountVolume.SetUp failed for volume \"local-b6daea4e-222a-42d9-9a1c-c998ea8452df\" (UniqueName: \"kubernetes.io/csi/local.csi.aliyun.com^local-b6daea4e-222a-42d9-9a1c-c998ea8452df\") pod \"rabbitmq-server-0\" (UID: \"c09c52b8-22c3-48ea-9954-7da39aae39f6\") : applyFSGroup failed for vol local-b6daea4e-222a-42d9-9a1c-c998ea8452df: lstat /apps/data/kubelet/pods/c09c52b8-22c3-48ea-9954-7da39aae39f6/volumes/kubernetes.io~csi/local-b6daea4e-222a-42d9-9a1c-c998ea8452df/mount: no such file or directory"

/kind feature
Add global imagePullPolicy configure

[dongjiang1989]

@peter-wangxu PTAL