Need support for passthrough / aggregators

[MeritedHobbit]

A redfish server may exist beyond a passthrough. A classic example is for GPUs where the redfish server is at /amc/redfish/v1/
Can we have an option for specifying the passthrough?

[mraineri]

9/12: More thought is needed in this. We're concerned opening the door on a validator tool from DMTF to bypass standard Redfish URI rules.