test: add missing cluster name in e2e test case

Signed-off-by: Carlos Salas <[email protected]>

Author: salasberryfin

test/e2e/e2e_gke_test.go

@@ -201,6 +201,7 @@ var _ = Describe("GKE workload cluster creation", func() {
 
 	Context("Creating a GKE cluster with autopilot from a cluster class", func() {
 		It("Should create a cluster class and a cluster from it", func() {
+			clusterName := fmt.Sprintf("%s-class", clusterNamePrefix)
 			By("Initializes a managed control plane and managed cluster")
 
 			ApplyManagedClusterTemplateAndWait(ctx, ApplyManagedClusterTemplateAndWaitInput{