fix(#507): support assign --post-renderer within helmfile flags and helmdefault or release config

1. only implement post-renderer flags this patch
2. As mumoshu advise, add helmfile flags `--post-render` and add the
   postRenderer  config in helmDefaults and release. the priority is
   helmfile flags > release > helmDefaults.
3. fix the test case in state_test.go and some other tests.

Signed-off-by: guofutan <guofutan@tencent.com>
Signed-off-by: yxxhero <aiopsclub@163.com>

pkg/app/app.go

@@ -1392,6 +1392,7 @@ Do you really want to apply?
 		}
 
 		r.helm.SetExtraArgs(argparser.GetArgs(c.Args(), r.state)...)
+		r.helm.SetPostRenderer(c.PostRenderer())
 
 		// We deleted releases by traversing the DAG in reverse order
 		if len(releasesToBeDeleted) > 0 {
@@ -1774,6 +1775,7 @@ Do you really want to sync?
 	var errs []error
 
 	r.helm.SetExtraArgs(argparser.GetArgs(c.Args(), r.state)...)
+	r.helm.SetPostRenderer(c.PostRenderer())
 
 	// Traverse DAG of all the releases so that we don't suffer from false-positive missing dependencies
 	st.Releases = selectedAndNeededReleases

pkg/app/app_test.go

@@ -2304,6 +2304,10 @@ func (c configImpl) SkipCharts() bool {
 	return c.skipCharts
 }
 
+func (c configImpl) PostRenderer() string {
+	return ""
+}
+
 type applyConfig struct {
 	args                   string
 	values                 []string
@@ -2334,6 +2338,7 @@ type applyConfig struct {
 	wait                   bool
 	waitForJobs            bool
 	reuseValues            bool
+	postRenderer           string
 
 	// template-only options
 	includeCRDs, skipTests       bool
@@ -2473,6 +2478,10 @@ func (a applyConfig) ReuseValues() bool {
 	return a.reuseValues
 }
 
+func (a applyConfig) PostRenderer() string {
+	return a.postRenderer
+}
+
 type depsConfig struct {
 	skipRepos              bool
 	includeTransitiveNeeds bool
@@ -2555,6 +2564,11 @@ func (helm *mockHelmExec) SetHelmBinary(bin string) {
 }
 func (helm *mockHelmExec) SetEnableLiveOutput(enableLiveOutput bool) {
 }
+func (helm *mockHelmExec) SetPostRenderer(postRenderer string) {
+}
+func (helm *mockHelmExec) GetPostRenderer() string {
+	return ""
+}
 func (helm *mockHelmExec) AddRepo(name, repository, cafile, certfile, keyfile, username, password string, managed string, passCredentials string, skipTLSVerify string) error {
 	helm.repos = append(helm.repos, mockRepo{Name: name})
 	return nil

pkg/app/config.go

@@ -42,6 +42,7 @@ type ReposConfigProvider interface {
 
 type ApplyConfigProvider interface {
 	Args() string
+	PostRenderer() string
 
 	Values() []string
 	Set() []string
@@ -80,6 +81,7 @@ type ApplyConfigProvider interface {
 
 type SyncConfigProvider interface {
 	Args() string
+	PostRenderer() string
 
 	Values() []string
 	Set() []string
@@ -186,6 +188,7 @@ type FetchConfigProvider interface {
 
 type TemplateConfigProvider interface {
 	Args() string
+	PostRenderer() string
 
 	Values() []string
 	Set() []string

pkg/app/mocks_test.go

@@ -53,6 +53,12 @@ func (helm *noCallHelmExec) SetHelmBinary(bin string) {
 func (helm *noCallHelmExec) SetEnableLiveOutput(enableLiveOutput bool) {
 	helm.doPanic()
 }
+func (helm *noCallHelmExec) SetPostRenderer(postRenderer string) {
+}
+func (helm *noCallHelmExec) GetPostRenderer() string {
+	return ""
+}
+
 func (helm *noCallHelmExec) AddRepo(name, repository, cafile, certfile, keyfile, username, password string, managed string, passCredentials string, skipTLSVerify string) error {
 	helm.doPanic()
 	return nil