Semantic Dedup Pairwise IO fails to list files for remote cloud path

[praateekmahajan]

Describe the bug

fs.ls(..) for remote cloud paths strips the protocol, which results in subsequent code paths failing

Curator/nemo_curator/stages/deduplication/semantic/pairwise_io.py

Line 82 in 55ddb34

for entry in self.fs.ls(self.input_path):

Steps/Code to reproduce bug

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A helpful guide on on how to craft a minimal bug report http://matthewrocklin.com/blog/work/2018/02/28/minimal-bug-reports.

Expected behavior

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Additional context

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