Add OpenVPN interfaces as potential ping sources, too.
Add OpenVPN interfaces as potential ping sources, too.

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