Update against new nodeenrollment registration cache

internal/daemon/controller/handler.go

@@ -43,6 +43,7 @@ import (
 	"github.com/hashicorp/go-cleanhttp"
 	"github.com/hashicorp/go-secure-stdlib/listenerutil"
 	"github.com/hashicorp/go-secure-stdlib/strutil"
+	"github.com/hashicorp/nodeenrollment"
 	"github.com/hashicorp/nodeenrollment/types"
 	"github.com/mr-tron/base58"
 	"google.golang.org/grpc"
@@ -573,19 +574,9 @@ func handleNodes(c *Controller) http.Handler {
 			}
 			var err error
 			var currVals vals
-			waitingNodes, err := c.NodeeFileStorage.List(c.baseContext, (*types.NodeInformation)(nil))
-			if err != nil {
-				_, _ = w.Write([]byte(err.Error()))
-				w.WriteHeader(500)
-				return
-			}
-			for _, keyId := range waitingNodes {
-				ni, err := types.LoadNodeInformation(c.baseContext, c.NodeeFileStorage, keyId)
-				if err != nil {
-					_, _ = w.Write([]byte(err.Error()))
-					w.WriteHeader(500)
-					return
-				}
+			waitingNodes := nodeenrollment.DefaultRegistrationCache.Items()
+			for keyId, val := range waitingNodes {
+				ni := val.(*types.NodeInformation)
 				if ni.Authorized {
 					continue
 				}