Improve vlan interface code to try to activate as much as possible on the parent, this allows to not maintain a supported list.
Improve vlan interface code to try to activate as much as possible on the parent, this allows to not maintain a supported list.

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