Get the billing rate for an existing GPU cluster based on its current configuration.
Deprecated: Use the new v2 endpoints instead:
/v2/pricing/{project_id}/{region_id}/gpu/virtual/clusters/{cluster_id}/servers/{server_id}
for virtual clusters/v2/pricing/{project_id}/{region_id}/gpu/baremetal/clusters/{cluster_id}/servers/{server_id}
for baremetal clusters