Explicitly configure nginx proxy settings

[bjester]

Summary

Description of the change(s) you made

• Explicitly sets a few proxy settings to eliminate nginx configuration as a possible source of Studio 502 issues proxying to GCS
• Removes catalog server configuration

Manual verification steps performed

None

References

https://learningequality.slack.com/archives/C0WHZ9FPX/p1715724564260899

Comments

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[DXCanas]

I don't really know what most of these props mean, but I figure it's worth a shot on hotfixes.

Let's see if @aronasorman get a chance to review, and merge by tomorrow the 16th either way?

[aronasorman]

Hmm I thought we had nginx tests I wrote at one poInt -- do they not run anymore?

[bjester]

@aronasorman We do, thanks to you! but not in the hotfixes branch yet 😅 we got a bunch of stuff in the pipeline that needs merged up, including those CI checks