OCPEDGE-2115: types: support MAC address as alternative identifier for fencing credential

OCPEDGE-2115: types: support MAC address as alternative identifier for fencing credential: a task in rh-swe-bench (Harbor dataset). Title: OCPEDGE-2115: types: support MAC address as alternative identifier for fencing credential

The task

**Title:** OCPEDGE-2115: types: support MAC address as alternative identifier for fencing credential

Part of rounakbende/rh-swe-bench.