fix: update container prefixes for blob url generation

Varunkumar Manoharrequested to merge
slb/vm/azure-blob-delete into master

This MR fixes the issue with blob deletion when a dataset is deleted.

containerClient.listBlobsByHierarchy function's ContainerListBlobsOptions needs to contain prefixes that endwith /

Edited by Varunkumar Manohar

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