Fixes #1666. For OpenVPN interfaces always check if part of bridge or not.
Fixes #1666. For OpenVPN interfaces always check if part of bridge or not.

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