refactor: expose configs for http clients used in object store

[MichaelScofield]

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Refer to a related PR or issue link (optional)

What's changed and what's your intention?

Unify the configuring of the http client used in the object store.

Checklist

• [ ] I have written the necessary rustdoc comments.
• [ ] I have added the necessary unit tests and integration tests.
• [x] This PR requires documentation updates.

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