feat: first batch of fixing error handeling with type checks kubernet…

…es#6906

Signed-off-by: nikzayn <nikhilvaidyar1997@gmail.com>

vertical-pod-autoscaler/pkg/updater/eviction/pods_eviction_restriction.go

@@ -381,13 +381,13 @@ func setUpInformer(kubeClient kube_client.Interface, kind controllerKind) (cache
 		informer = appsinformer.NewDaemonSetInformer(kubeClient, apiv1.NamespaceAll,
 			resyncPeriod, cache.Indexers{cache.NamespaceIndex: cache.MetaNamespaceIndexFunc})
 	default:
-		return nil, fmt.Errorf("Unknown controller kind: %v", kind)
+		return nil, fmt.Errorf("unknown controller kind: %s", kind)
 	}
 	stopCh := make(chan struct{})
 	go informer.Run(stopCh)
 	synced := cache.WaitForCacheSync(stopCh, informer.HasSynced)
 	if !synced {
-		return nil, fmt.Errorf("Failed to sync %v cache.", kind)
+		return nil, fmt.Errorf("failed to sync %s cache", kind)
 	}
 	return informer, nil
 }

vertical-pod-autoscaler/pkg/utils/limitrange/limit_range_calculator.go

@@ -81,7 +81,7 @@ func (lc *limitsChecker) GetPodLimitRangeItem(namespace string) (*core.LimitRang
 func (lc *limitsChecker) getLimitRangeItem(namespace string, limitType core.LimitType) (*core.LimitRangeItem, error) {
 	limitRanges, err := lc.limitRangeLister.LimitRanges(namespace).List(labels.Everything())
 	if err != nil {
-		return nil, fmt.Errorf("error loading limit ranges: %s", err)
+		return nil, fmt.Errorf("Error loading limit ranges: %w", err)
 	}
 
 	updatedResult := func(result core.ResourceList, lrItem core.ResourceList,