Update io util to convert path like object to string

[ayushdg]

Fixes failing dask-cudf s3 test introduced from changes to fsspec.stringify_path in their 2021.5.0 release.

Problem description:
While reading remote files with dask-cudf the path_or_object param is populated with remote file objects such as s3fs.s3File or gcsfs.GCSFile. Updates to the fsspec.stringify_path util results in returning the string path for such objects resulting in cudf looking for those file paths locally.

Fix:
Fix uses one of the branches from the original stringify_path util that checks if a path like object implement the fsspath protocol and gets the string representation from that.

[codecov]

Codecov Report

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  Hits                    ?    14800           
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[kkraus14]

@gpucibot merge

[ayushdg]

There seem to be errors the decimal orc writer tests unrelated to this pr. Might be a timing issue since the to_orc decimal support merged 4 hours back so it may not have made it to the libcudf build in CI

[ayushdg]

Rerun tests