Cleaning up previous runs from GPU runner

[agunapal]

Description

This PR cleans up the workspace directory fully from the CI GPU runners.

Fixes #(issue)

Type of change

Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• New feature (non-breaking change which adds functionality)
• This change requires a documentation update

Feature/Issue validation/testing

Please describe the Unit or Integration tests that you ran to verify your changes and relevant result summary. Provide instructions so it can be reproduced.
Please also list any relevant details for your test configuration.

• Test A
  Logs for Test A

• Test B
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Checklist:

• Did you have fun?
• Have you added tests that prove your fix is effective or that this feature works?
• Has code been commented, particularly in hard-to-understand areas?
• Have you made corresponding changes to the documentation?

[msaroufim]

Let's wait on ci, might also need to skip the streaming handler tests to actually merge this

I would have expected cd $RUNNER_WORKSPACE to stick around

[codecov]

Codecov Report

Merging #2676 (ee73c39) into master (88a19de) will not change coverage.
The diff coverage is n/a.

❗ Current head ee73c39 differs from pull request most recent head 5eca608. Consider uploading reports for the commit 5eca608 to get more accurate results

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  Files          85       85           
  Lines        3956     3956           
  Branches       58       58           
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  Misses       1088     1088           
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[lxning]

we need specify the path and then delete

[agunapal]

This doesn't work https://github.com/pytorch/serve/actions/runs/6409297939

Also, we have been doing the same in Regression GPU runners and it works

https://github.com/pytorch/serve/blob/master/.github/workflows/regression_tests_gpu.yml#L21

[msaroufim]

Could you maybe add a comment to more explicitly say what this is trying to achieve? As in which files are folders are you targeting for cleanup

The benefit of not having * in remove commands is we can be more explicit about what's being deleted

[msaroufim]

Just so we can move on

# deletes all files in the current directory
sudo rm -rf ./* || true
# deletes all hidden files in a directory
sudo rm -rf ./.??* || true
``