SYSRC file in templates should be sanitized

Example of broken SYSRC file: https://gitlab.com/bastillebsd-templates/wordpress/blob/master/SYSRC After applying wordpress template multiple times /etc/rc.conf in jail is broken:

root@myfirstpot:/ # cat /etc/rc.conf
mysql_enable="YES"
php_fpm_enable=""YES""YES""YES""
nginx_enable="YES"