modified detection of pci bus id's to account for baremetal machines have a different format

Baremetal machines have a different pci bus id i.e. for baremetal nvidia-smi --query-gpu=pci.bus_id --format=csv,noheader 00000000:06:00.0 for vms nvidia-smi --query-gpu=pci.bus_id --format=csv,noheader 00000000:00:07.0 This causes this file to break as it parses on column number. This code checks one way, then tries the second, then exits if it fails. Checked on ge00 and gf00. Should not break anything..