DRA apiserver: allow DRAAdminAccess feature without DynamicResourceAllocation

This makes a configuration with --feature-gates=AllAlpha=true valid
again. Without this change, that flag enabled DRAAdminAccess without
DynamicResourceAllocation being enabled (default off!) and the kube-apiserver
refused to start.

While DRAAdminAccess isn't usable without DynamicResourceAllocation, it's also
not really wrong to allow it - it simply won't matter.

Author: pohly

pkg/controlplane/apiserver/options/validation.go

@@ -77,13 +77,6 @@ func validateNodeSelectorAuthorizationFeature() []error {
 	return nil
 }
 
-func validateDRAAdminAccessFeature() []error {
-	if utilfeature.DefaultFeatureGate.Enabled(features.DRAAdminAccess) && !utilfeature.DefaultFeatureGate.Enabled(features.DynamicResourceAllocation) {
-		return []error{fmt.Errorf("DRAAdminAccess feature requires DynamicResourceAllocation feature to be enabled")}
-	}
-	return nil
-}
-
 func validateUnknownVersionInteroperabilityProxyFeature() []error {
 	if utilfeature.DefaultFeatureGate.Enabled(features.UnknownVersionInteroperabilityProxy) {
 		if utilfeature.DefaultFeatureGate.Enabled(genericfeatures.StorageVersionAPI) {
@@ -128,7 +121,6 @@ func (s *Options) Validate() []error {
 	errs = append(errs, validateUnknownVersionInteroperabilityProxyFeature()...)
 	errs = append(errs, validateUnknownVersionInteroperabilityProxyFlags(s)...)
 	errs = append(errs, validateNodeSelectorAuthorizationFeature()...)
-	errs = append(errs, validateDRAAdminAccessFeature()...)
 
 	return errs
 }