File php-fpm.service.override of Package icingaweb2

#
# With PHP 7.4, there is a new default restriction in place for php-fpm, 
# which normally forbits the running php-fpm process to write into any 
# system directory. 
#
# To allow editing of /etc/icingaweb2 for the php-fpm process, this drop-in 
# contains the needed exception for the php-fpm process.
#
# If you need to override one of the options, please create your own
# drop-in in /etc/systemd/system with a higher priority (preferably 
# greater than 70)
#

[Service]
ReadWritePaths=/etc/icingaweb2