rest: healthcheck should not update failure metrics (#12458)

Otherwise, we can see high numbers of networking issues when a node is
down.

cmd/lock-rest-client.go

@@ -161,6 +161,7 @@ func newlockRESTClient(endpoint Endpoint) *lockRESTClient {
 	// Use a separate client to avoid recursive calls.
 	healthClient := rest.NewClient(serverURL, globalInternodeTransport, newAuthToken)
 	healthClient.ExpectTimeouts = true
+	healthClient.NoMetrics = true
 	restClient.HealthCheckFn = func() bool {
 		ctx, cancel := context.WithTimeout(context.Background(), restClient.HealthCheckTimeout)
 		defer cancel()