kubelet: don't print httplogs for redirects

The new CRI exec implementation relies on this status code. Without this
change, kubelet logs a scary stacktrace during normal execution.

pkg/kubelet/server/server.go

@@ -675,6 +675,7 @@ func (s *Server) ServeHTTP(w http.ResponseWriter, req *http.Request) {
 	defer httplog.NewLogged(req, &w).StacktraceWhen(
 		httplog.StatusIsNot(
 			http.StatusOK,
+			http.StatusFound,
 			http.StatusMovedPermanently,
 			http.StatusTemporaryRedirect,
 			http.StatusBadRequest,