pm.max_requests for PHP-FPM packages

RHEL8 users has increased, and reports of out of memory by php-fpm have also increased.

it's better to add 'pm.max_requests' to the package as the zabbix.conf default setting.

pm.max_requests - provides ability to re-spawn thread/child and clean used memory.

The main problem with the dynamic process manager for the PHP-FPM - it never performs de-allocation of the used memory with absent pm.max_requests option you can see such weird behavior with memory allocation.

php-fpm: pool zabbix

/proc/1165/status:VmSwap:         145956 kB
/proc/1162/status:VmSwap:         137972 kB
/proc/1161/status:VmSwap:         129540 kB
/proc/1167/status:VmSwap:         127688 kB
/proc/1166/status:VmSwap:         127660 kB