Update default config.xml empty tags. Fixes #12299
Update default config.xml empty tags. Fixes #12299

Reduces the difference between the stock config.xml and what is
written after initial changes are made to the config post-install.

dennypage/pfsense,pfsense/pfsense,NewEraCracker/pfsense,pfsense/pfsense,pfsense/pfsense,dennypage/pfsense,NewEraCracker/pfsense,NewEraCracker/pfsense,pfsense/pfsense,dennypage/pfsense,dennypage/pfsense,NewEraCracker/pfsense