Makes the bridge workaround permanent for all jobs

The workaround where the MAC address has to be the same as the
interface attached to it is not really a "workaround" but how linux
bridges work, in a BM environment, that happens without a problem
but with a nested VM, the MAC address may change

Change-Id: I7e690509ae3547d8499e4262654a5a7d7daa7217