EVPN/VXLAN: add static fdb entry for local ports
EVPN/VXLAN: add static fdb entry for local ports

Adding a static fdb entry for local ports, instead of relying
on learning, is useful: if the local port does not send traffic, the
bridge would never learn the MAC and always treat the traffic to
the port as unknown traffic, and thus broadcast (to other ports, and
via vxlan) which it is best to avoid.

stackforge/networking-bagpipe-l2,openstack/networking-bagpipe-l2,openstack/networking-bagpipe,openstack/networking-bagpipe-l2,openstack/networking-bagpipe,stackforge/networking-bagpipe-l2