[FIX]repository config file generated always '0001-01-01T00:00:00Z' when repo add

Signed-off-by: Scaat Feng <scaat.feng@gmail.com>

cmd/helm/repo_add.go

@@ -186,6 +186,8 @@ func (o *repoAddOptions) run(out io.Writer) error {
 
 	f.Update(&c)
 
+	f.Generated = time.Now()
+
 	if err := f.WriteFile(o.repoFile, 0644); err != nil {
 		return err
 	}

pkg/repo/repo.go

@@ -112,7 +112,6 @@ func (r *File) Remove(name string) bool {
 
 // WriteFile writes a repositories file to the given path.
 func (r *File) WriteFile(path string, perm os.FileMode) error {
-	r.Generated = time.Now()
 	data, err := yaml.Marshal(r)
 	if err != nil {
 		return err