Remove unneeded VTIs in IPsec sync. Issue #8674
Remove unneeded VTIs in IPsec sync. Issue #8674

Still needs input validation to prevent changes that would remove an
assigned interface.

phil-davis/pfsense,phil-davis/pfsense,phil-davis/pfsense,NewEraCracker/pfsense,NewEraCracker/pfsense,NewEraCracker/pfsense,pfsense/pfsense,phil-davis/pfsense,dennypage/pfsense,NewEraCracker/pfsense,dennypage/pfsense,pfsense/pfsense,pfsense/pfsense,dennypage/pfsense,pfsense/pfsense,dennypage/pfsense