Investigate NGINX configuration

Review the existing NGINX configuration and decide what needs to be brought over to the new environment.

There are some directives that only routing to external servers, we need to know if those are still used, and decide how to handle them in the new environment.

Locate the existing NGINX configuration and inventory directives that route to external servers. Check which of those routes are still used and determine how each should be handled in the new environment; the work is done when the migration decisions are recorded.

Written by the indexing model from the issue text.