GCS fetch: add discovery num_retries and query rate_delay

[TimidRobot]

Description

GCS fetch: add discovery num_retries and query rate_delay

Technical details

• googleapiclient API Documentation
  • googleapiclient.discovery.build()

Checklist

• My pull request has a descriptive title (not a vague title like Update index.md).
• My pull request targets the default branch of the repository (main or master).
• My commit messages follow best practices.
• My code follows the established code style of the repository.
• I added or updated tests for the changes I made (if applicable).
• I added or updated documentation (if applicable).
• I tried running the project locally and verified that there are no
  visible errors.

Developer Certificate of Origin

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Developer Certificate of Origin

Developer Certificate of Origin
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