Delta Powershelf on PMC firmware 3.1.7 has a string type for Chassis field location.placement.rackoffset.

curl -sk https://10.188.13.2/redfish/v1/Chassis/PowerShelf_0 -u coreweave:’REDACT’ | jq .Location
{
  "Placement": {
    "AdditionalInfo": "",
    "Rack": "",
    "RackOffset": "",
    "RackOffsetUnits": null,
    "Row": ""
  }
}

In upstream gofish, and the DMTF (2025-02-05 Version: 1.1.0 page 26) spec - this is an int type. This should be an EVR request, but until FW fixes this and is rolled out to delta powershelves, we can use this as a stopgap so metaldev tooling doesn't break.

This field isn't used directly in any metaldev code - this change simply allows us to unmarshal redfish chassis into the gofish type.