Comment 2 for bug 1399676

MAAS records which MAC is the one a node PXE booted from during commissioning.

In order to display this MAC in the listing for 'New' and 'Commissioning' nodes, we could look into changing the enlistment script to report the MAC the node pxebooted from *first* (suggestion from smoser: "/proc/cmdline probably has a BOOTIF on it that gives you a mac address") so that it would get displayed as the "primary MAC" (i.e. the first one in the node's MACs)