Allow nsys profile saved to local directory

[hengtaoguo]

Description

Check whether the output_path is a GCS path or a local path:

• For GCS path, check gsutil availability and if so save the profile.
• For local path, save the profile using cp command.

FIXES: #911

Tests

Please describe how you tested this change, and include any instructions and/or
commands to reproduce.

Checklist

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• I have performed a self-review of my code.
• I have necessary comments in my code, particularly in hard-to-understand areas.
• I have run end-to-end tests tests and provided workload links above if applicable.
• I have made or will make corresponding changes to the doc if needed.