fix: Support for kustomization as chart

A kustomization has not been properly chartified when a kustomization is specified on `releases[].chart` but there were no `releases[].strategicMergePatches` and `jsonPatches` specified.
This fixes that.

pkg/state/helmx.go

@@ -3,6 +3,8 @@ package state
 import (
 	"github.com/roboll/helmfile/pkg/helmexec"
 	"github.com/variantdev/chartify"
+	"os"
+	"path/filepath"
 	"strings"
 )
 
@@ -29,6 +31,13 @@ func (st *HelmState) PrepareChartify(helm helmexec.Interface, release *ReleaseSp
 
 	opts.ChartVersion = release.Version
 
+	dir := filepath.Join(st.basePath, release.Chart)
+	if stat, _ := os.Stat(dir); stat != nil && stat.IsDir() {
+		if exists, err := st.fileExists(filepath.Join(dir, "Chart.yaml")); err == nil && !exists {
+			shouldRun = true
+		}
+	}
+
 	for _, d := range release.Dependencies {
 		var dep string