Added TmpHelfilePath field to ReleaseSet strucutre to store info abou…

…t used temporarty helmfile path.

Handle tmpHelmfilPath removal in all places where `NewCommandWithKubeconfig` executed.

Makefile

@@ -1,7 +1,7 @@
 .DEFAULT_GOAL := build
 OS            := $(shell go env GOOS)
 ARCH          := $(shell go env GOARCH)
-PLUGIN_PATH   ?= ${HOME}/.terraform.d/plugins/${OS}_${ARCH}
+PLUGIN_PATH   ?= ${HOME}/.terraform.d/plugins/registry.example.com/dm3ch/helmfile/1.0.3/${OS}_${ARCH}
 PLUGIN_NAME   := terraform-provider-helmfile
 DIST_PATH     := dist/${OS}_${ARCH}
 GO_PACKAGES   := $(shell go list ./... | grep -v /vendor/)

pkg/helmfile/release_set.go

@@ -139,6 +139,7 @@ func NewCommandWithKubeconfig(fs *ReleaseSet, args ...string) (*exec.Cmd, error)
 	if err := ioutil.WriteFile(filepath.Join(fs.WorkingDirectory, path), bs, 0700); err != nil {
 		return nil, err
 	}
+	defer os.Remove(path)
 
 	flags := []string{
 		"--file", path,