Parametrize ironic VM mac addresses

Since baremetal simulator is going to be deployed
on 3 baremetal nodes - ironic VM mac addresses
should be unique across nodes otherwise ironic ports
won`t be created. This patch parametrizes the first 3
octets (vendor id) of mac adress hence it can be set on
reclass node level

Change-Id: Ib7f39c63f5e61b16609ca23a463b2e25c92b3954
Related-PROD: PROD-24887
2 files changed