Handle odev mac of 00:00:00:00:00:00
Handle odev mac of 00:00:00:00:00:00

* The older fabric seems to like setting this value like a crazy
  person rather than just not setting the property.  Some people just
  want to watch the world burn.

Signed-off-by: Rob Adams <dc34e1981fc17062c98433ad1bfcab20a4e3a66c@readams.net>

noironetworks/aci-containers,noironetworks/aci-containers