don't send lldp via pxe interface
don't send lldp via pxe interface

Change-Id: I688a3fe27bc4a8bc0ba17469add8acba9fbee4a1

wolverineav/networking-bigswitch,stackforge/networking-bigswitch,wolverineav/networking-bigswitch,openstack/networking-bigswitch,openstack/networking-bigswitch,stackforge/networking-bigswitch