Confirm nginx fips compliance

Once #6316 (closed) and #6317 (closed) have been completed, we can evaluate fips use in nginx in our final package.

• Build a GitLab system ssl package for a fips certified distro
• Install on fips enabled system
• Verify openssl has fips modules available and enabled
• Verify nginx is in fips mode - https://www.nginx.com/blog/achieving-fips-compliance-nginx-plus/#FIPS-Compliance-with-NGINX-Open-Source and https://docs.nginx.com/nginx/fips-compliance-nginx-plus/#verification-of-correct-operation-of-nginxplus