add error log print for health check cluster failed

controllers/remote/cluster_cache_tracker.go

@@ -640,6 +640,8 @@ func (t *ClusterCacheTracker) healthCheckCluster(ctx context.Context, in *health
 
 		if unhealthyCount >= in.unhealthyThreshold {
 			// Cluster is now considered unhealthy.
+			fmt.Println(err.Error())
+			fmt.Println(errors.Is(err, context.DeadlineExceeded))
 			return false, err
 		}
 
@@ -651,6 +653,8 @@ func (t *ClusterCacheTracker) healthCheckCluster(ctx context.Context, in *health
 	// times for the cluster to be considered unhealthy
 	// NB. we are ignoring ErrWaitTimeout because this error happens when the channel is close, that in this case
 	// happens when the cache is explicitly stopped.
+	fmt.Println(err.Error())
+	fmt.Println(errors.Is(err, context.DeadlineExceeded))
 	if err != nil && !wait.Interrupted(err) {
 		t.log.Error(err, "Error health checking cluster", "Cluster", klog.KRef(in.cluster.Namespace, in.cluster.Name))
 		t.deleteAccessor(ctx, in.cluster)