e2e: Increase timeout for assertGatewaySuccessful to 10m

CCM leader election can take several minutes, delaying LB provisioning.
In some clusters, leader election has been observed to take up to 8m.
To accommodate this, increase the timeout for `assertGatewaySuccessful` to 10m.

Author: alebedev87

test/e2e/util_gatewayapi_test.go

@@ -755,8 +755,9 @@ func assertGatewaySuccessful(t *testing.T, namespace, name string) (*gatewayapiv
 
 	// Wait for the gateway to be accepted and programmed.
 	// Load balancer provisioning can take several minutes on some platforms.
-	// Therefore, a timeout of 3 minutes is set to accommodate potential delays.
-	err := wait.PollUntilContextTimeout(context.Background(), 3*time.Second, 3*time.Minute, false, func(context context.Context) (bool, error) {
+	// CCM leader election can also be slow - up to 8 minutes has been observed.
+	// Therefore, a timeout of 10 minutes is set to accommodate potential delays.
+	err := wait.PollUntilContextTimeout(context.Background(), 5*time.Second, 10*time.Minute, false, func(context context.Context) (bool, error) {
 		if err := kclient.Get(context, nsName, gw); err != nil {
 			t.Logf("Failed to get gateway %v: %v; retrying...", nsName, err)
 			return false, nil
@@ -794,7 +795,7 @@ func assertGatewaySuccessful(t *testing.T, namespace, name string) (*gatewayapiv
 			t.Logf("Failed to get gateway service %v: %v; retrying...", svcNsName, err)
 			return false, nil
 		}
-		t.Logf("[%s] Found gateway service: %+v", time.Now().Format(time.DateTime), svc)
+		t.Logf("[%s] Found gateway service with status: %+v", time.Now().Format(time.DateTime), svc.Status)
 		return false, nil
 	})
 	if err != nil {