Add -var-file and -var to destroy operation ; Go fmt the code

plugin.go

@@ -255,6 +255,13 @@ func tfDestroy(config Config) *exec.Cmd {
 	for _, v := range config.Targets {
 		args = append(args, fmt.Sprintf("-target=%s", v))
 	}
+	for _, v := range config.VarFiles {
+		args = append(args, "-var-file", fmt.Sprintf("%s", v))
+	}
+	for k, v := range config.Vars {
+		args = append(args, "-var")
+		args = append(args, fmt.Sprintf("%s=%s", k, v))
+	}
 	if config.Parallelism > 0 {
 		args = append(args, fmt.Sprintf("-parallelism=%d", config.Parallelism))
 	}

plugin_test.go

@@ -102,10 +102,10 @@ func TestPlugin(t *testing.T) {
 			}
 
 			tests := []struct {
-				name string
-				args args
+				name    string
+				args    args
 				destroy bool
-				want *exec.Cmd
+				want    *exec.Cmd
 			}{
 				{
 					"default",

terraform.go

@@ -32,7 +32,7 @@ func downloadTerraform(version string) error {
 func downloadFile(filepath string, url string) error {
 	// Create the file
 	out, err := os.Create(filepath)
-	if err != nil  {
+	if err != nil {
 		return err
 	}
 	defer out.Close()
@@ -46,7 +46,7 @@ func downloadFile(filepath string, url string) error {
 
 	// Writer the body to file
 	_, err = io.Copy(out, resp.Body)
-	if err != nil  {
+	if err != nil {
 		return err
 	}