Add default use_tmp_hub_dir value for integration tests

[hwangjeff]

Summary: In the event that use_tmp_hub_dir isn't specified as an option, pytest shouldn't fail. To resolve such failures, this PR modifies function temp_hub_dir to fall back on a default value of False for use_tmp_hub_dir.

Differential Revision: D48318947

[pytorch-bot]

🔗 Helpful Links

🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/audio/3558

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❌ 1 New Failure, 1 Pending, 1 Unrelated Failure

As of commit 7efcc35:

NEW FAILURE - The following job has failed:

• python-source-and-configs / linux-job (gh)

BROKEN TRUNK - The following job failed but were present on the merge base 9467fc4:

👉 Rebase onto the `viable/strict` branch to avoid these failures

• unittests-windows-gpu / windows-job (gh)

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[facebook-github-bot]

This pull request was exported from Phabricator. Differential Revision: D48318947

[facebook-github-bot]

This pull request has been merged in d1d41fd.

[github-actions]

Hey @None.
You merged this PR, but labels were not properly added. Please add a primary and secondary label (See https://github.com/pytorch/audio/blob/main/.github/process_commit.py).

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Use 'module: ops' for operations under 'torchaudio/{transforms, functional}', and ML-related components under 'torchaudio/csrc' (e.g. RNN-T loss).

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