Nginx: Ping configuration is not optimal

[ragnarkurmwunder]

https://wunder.slack.com/archives/CAC0EPL1G/p1598360110001200?thread_ts=1598359982.000900&cid=CAC0EPL1G

Need to add:

fastcgi_param SCRIPT_NAME /_ping.php;

Because in AWS we would like to use this:

// Simplified IP range for AWS Health Check.
if ($_SERVER['SCRIPT_NAME'] == '/_ping.php') {
  $settings['trusted_host_patterns'][] = '^[\d.]+$';
}