Merge pull request kubernetes#6528 from yarinm/yarinm/expectedToRegis…

…ter-fix

Fix expectedToRegister to respect instances with nil status

cluster-autoscaler/clusterstate/clusterstate.go

@@ -1033,7 +1033,7 @@ func getNotRegisteredNodes(allNodes []*apiv1.Node, cloudProviderNodeInstances ma
 }
 
 func expectedToRegister(instance cloudprovider.Instance) bool {
-	return instance.Status != nil && instance.Status.State != cloudprovider.InstanceDeleting && instance.Status.ErrorInfo == nil
+	return instance.Status == nil || (instance.Status.State != cloudprovider.InstanceDeleting && instance.Status.ErrorInfo == nil)
 }
 
 // Calculates which of the registered nodes in Kubernetes that do not exist in cloud provider.