I am probably overlooking something simple.
How do I add custom php_admin_value to PHP Configuration?
My entry 
newrelic.appname = "{DOMAIN}"
seems to be ignored
Using PHP-FPM

For php-fpm we need to define whether a PHP.ini setting ist a php_value or php_admin_value or php_flag or php_admin_flag therefore we cannot include every possible config directive. Im currently working on a solution for the next version. Sorry.

And here we go, current git-master holds changes so you can dynamically add/edit/remove entries that can be added to the php_flag/php_admin_flag/php_value/php_admin_value fields  see https://github.com/Froxlor/Froxlor/commit/6e651200ca5c6168aee1f6027e4256a60f64e588

Wow, lightspeed! And PHP-FPM versions! Yay!!!
Danke schoen!!!
How do I send a beer

https://www.froxlor.org/#donate

sent, with thanks!