CRDCDH-2450 Add react-specific caching policies

[amattu2]

Overview

This PR changes the production Nginx caching policies to align with a more React-specific deployment. Specifically:

• Enforce NO caching on the index.html file, which references the React chunks
• Enforce 1hr max cache on the injectEnv.js file
• Enforce a 1mo cache duration for most static assets

These are somewhat arbitrary baselines, but we can adjust as needed.

Change Details (Specifics)

N/A

Related Ticket(s)

CRDCDH-2450 (Task)

[coveralls]

Pull Request Test Coverage Report for Build 13795278265

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 60.279%

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Totals
Change from base Build 13771365852:	0.0%
Covered Lines:	4372
Relevant Lines:	6833

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💛 - Coveralls

[Alejandro-Vega]

Most of it LGTM, I did find 2 potential concerns by running it through a tool. Please take a look below.

[Alejandro-Vega]

I ran the configuration file through a security check using the following tool:
https://www.getpagespeed.com/check-nginx-config

It brought up some valid concerns such as nesting the "add_header" drops parent headers, as well as the try_files should probably be used with open_file_cache to negate overhead caused by try_files alone. Please take a look.