DRA: move DriverName into 3063 KEP

Structured parameters don't use the ResourceClass driver name for anything. All
that matters are the driver names in the individual requests and/or filters.

keps/sig-node/3063-dynamic-resource-allocation/README.md

@@ -256,12 +256,18 @@ plane controller:
 type ResourceClass struct {
     ...
 
-    // If (and only if) allocation of claims using this class is handled
-    // by the DRA driver, ControlPlaneController must be set to true.
+    // ControllerName defines the name of the dynamic resource driver that is
+    // used for allocation of a ResourceClaim that uses this class. If empty,
+    // structured parameters are used for allocating claims using this class.
+    //
+    // Resource drivers have a unique name in forward domain order
+    // (acme.example.com).
     //
     // This is an alpha field and requires enabling the DRAControlPlaneController
     // feature gate.
-   ControlPlaneController bool
+    //
+    // +optional
+    ControllerName string
 }
 ```
 
@@ -353,6 +359,15 @@ const (
 ```
 type ResourceClaimStatus struct {
     ...
+    // ControllerName is a copy of the driver name from the ResourceClass at
+    // the time when allocation started. It is empty when the claim was
+    // allocated through structured parameters,
+    //
+    // This is an alpha field and requires enabling the DRAControlPlaneController
+    // feature gate.
+    //
+    // +optional
+    ControllerName string
 
     // DeallocationRequested indicates that a ResourceClaim is to be
     // deallocated.

keps/sig-node/4381-dra-structured-parameters/README.md

@@ -447,7 +447,6 @@ apiVersion: core.k8s.io/v1alpha2
 kind: ResourceClass
 metadata:
   name: acme-gpu
-driverName: gpu.example.com
 parametersRef:
   apiGroup: gpu.example.com
   kind: GPUInit
@@ -1332,13 +1331,6 @@ type ResourceClass struct {
     // +optional
     metav1.ObjectMeta
 
-    // DriverName defines the name of the dynamic resource driver that is
-    // used for allocation of a ResourceClaim that uses this class.
-    //
-    // Resource drivers have a unique name in forward domain order
-    // (acme.example.com).
-    DriverName string
-
     // ParametersRef references an arbitrary separate object that may hold
     // parameters that will be used by the driver when allocating a
     // resource that uses this class. A dynamic resource driver can
@@ -1478,11 +1470,6 @@ type ResourceClaimSpec struct {
 // ResourceClaimStatus tracks whether the resource has been allocated and what
 // the resulting attributes are.
 type ResourceClaimStatus struct {
-    // DriverName is a copy of the driver name from the ResourceClass at
-    // the time when allocation started.
-    // +optional
-    DriverName string
-
     // Allocation is set by the resource driver once a resource or set of
     // resources has been allocated successfully. If this is not specified, the
     // resources have not been allocated yet.