Add filter.so to list of extensions loaded for 2.2
Add filter.so to list of extensions loaded for 2.2

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