Audit Nginx Configurations for API service Migration

Utilize this issue to audit the nginx configuration that we will be utilizing on the API service that sits between haproxy and the webservice Pods when compared against the existing VM setup.

Following investigation:

Before

config item	VM	kubernetes	nginx default	Status
client_max_body_size	5,368,709,120 bytes	0	1m	❌
proxy_read_timeout	3600	3600s	60s	✅
proxy_send_timeout	nginx default	60s	60s	✅
proxy_connect_timeout	300	300s	60s	✅
proxy_buffering	nginx default	off	on	❌
proxy_request_buffering	nginx default; with caveats	off	on	❌
proxy_max_temp_file_size	nginx default	1024m	1024m	✅

After

config item	VM	kubernetes	nginx default	Status
client_max_body_size	5,368,709,120 bytes	0	1m	❌ - Purposeful (see below)
proxy_read_timeout	3600	3600s	60s	✅
proxy_send_timeout	nginx default	60s	60s	✅
proxy_connect_timeout	300	300s	60s	✅
proxy_buffering	nginx default	on	on	✅ :
proxy_request_buffering	nginx default; with caveats	on; with caveats	on	✅ :
proxy_max_temp_file_size	nginx default	1024m	1024m	✅

The above caveat and purposeful items are addressed in this comment: #1683 (comment 564923760)

This issue will be used to match configurations where needed.