Support macvtap for vif_type being hw_veb

This patch programs VLAN into a VF pci device, and properly
plug/unplug it into the instance.

Change-Id: I85eb3c1347d057d1f292e747f950065b8f394147
Closes-Bug: 1370348
Co-Authored-By: Itzik Brown <ItzikB@mellanox.com>
Merge "Support macvtap for vif_type being hw_veb"