Add backend support for aliases on source and destination address of outbound NAT rules.
Add backend support for aliases on source and destination address of outbound NAT rules.

ch1c4um/pfsense,brunostein/pfsense,NewEraCracker/pfsense,BlackstarGroup/pfsense,pfsense/pfsense,NOYB/pfsense,ptorsten/pfsense,ch1c4um/pfsense,NOYB/pfsense,ptorsten/pfsense,jxmx/pfsense,brunostein/pfsense,NewEraCracker/pfsense,phil-davis/pfsense,BlackstarGroup/pfsense,NewEraCracker/pfsense,jxmx/pfsense,dennypage/pfsense,NewEraCracker/pfsense,pfsense/pfsense,ptorsten/pfsense,dennypage/pfsense,brunostein/pfsense,pfsense/pfsense,phil-davis/pfsense,phil-davis/pfsense,NOYB/pfsense,ch1c4um/pfsense,ch1c4um/pfsense,phil-davis/pfsense,dennypage/pfsense,jxmx/pfsense,dennypage/pfsense,pfsense/pfsense,BlackstarGroup/pfsense,BlackstarGroup/pfsense