The collection parameter in StorageClass does not take effect

[hanxiantao]

Issue Description

According to the documentation, I understand that when the collection parameter is specified in the StorageClass, it should be mapped to the bucket configured by the collection.

kind: StorageClass
apiVersion: storage.k8s.io/v1
metadata:
  name: mycollection-seaweedfs-storage
provisioner: seaweedfs-csi-driver
parameters:
  collection: mycollection
reclaimPolicy: Delete
allowVolumeExpansion: true
volumeBindingMode: Immediate

However, after my attempt, it did not execute as expected. It was still mapped to the default-generated /buckets/<volume-id>.

I checked the code and tried to configure the path parameter. After that, the mapped bucket was changed to the one specified in the path.

kind: StorageClass
apiVersion: storage.k8s.io/v1
metadata:
  name: mycollection-seaweedfs-storage
provisioner: seaweedfs-csi-driver
parameters:
  collection: mycollection
  path: /buckets/lgwtest03
reclaimPolicy: Delete
allowVolumeExpansion: true
volumeBindingMode: Immediate

I initially think there is a problem with the code here. When the collection parameter is specified, it should affect the value of path, path = fmt.Sprintf("/buckets/%s", collection)
https://github.com/seaweedfs/seaweedfs-csi-driver/blob/c4af3d29895c8eeee4b7faf00b05b5792a3976aa/pkg/driver/mounter.go#L37C1-L49C2

[chrislusf]

the collection must be the same as the bucket name.