Use a single log line in GCE refresh to more accurately represent the…

… next refresh

cluster-autoscaler/cloudprovider/gce/gce_manager.go

@@ -825,29 +825,26 @@ func (m *gceManagerImpl) Refresh() error {
 }
 
 func (m *gceManagerImpl) forceRefresh() error {
-	nextRefreshAfter := time.Now().Add(refreshInterval)
 	switch m.mode {
 	case ModeGCE:
 		if err := m.fetchAutoMigs(); err != nil {
 			glog.Errorf("Failed to fetch MIGs: %v", err)
 			return err
 		}
-		glog.V(2).Infof("Refreshed MIG list, next refresh after %v", nextRefreshAfter)
 	case ModeGKENAP:
 		if err := m.fetchResourceLimiter(); err != nil {
 			glog.Errorf("Failed to fetch resource limits: %v", err)
 			return err
 		}
-		glog.V(2).Infof("Refreshed resource limits, next refresh after %v", nextRefreshAfter)
 		fallthrough
 	case ModeGKE:
 		if err := m.fetchAllNodePools(); err != nil {
 			glog.Errorf("Failed to fetch node pools: %v", err)
 			return err
 		}
-		glog.V(2).Infof("Refreshed NodePool list, next refresh after %v", nextRefreshAfter)
 	}
 	m.lastRefresh = time.Now()
+	glog.V(2).Infof("Refreshed GCE resources, next refresh after %v", m.lastRefresh.Add(refreshInterval))
 	return nil
 }