cleanup: using const block

Signed-off-by: SataQiu <qiushida@beyondcent.com>

cmd/helm/installer/options.go

@@ -24,7 +24,12 @@ import (
 	"k8s.io/helm/pkg/version"
 )
 
-const defaultImage = "gcr.io/kubernetes-helm/tiller"
+const (
+	defaultImage = "gcr.io/kubernetes-helm/tiller"
+
+	fmtJSON OutputFormat = "json"
+	fmtYAML OutputFormat = "yaml"
+)
 
 // Options control how to install Tiller into a cluster, upgrade, and uninstall Tiller from a cluster.
 type Options struct {
@@ -154,11 +159,6 @@ func (f *OutputFormat) Type() string {
 	return "OutputFormat"
 }
 
-const (
-	fmtJSON OutputFormat = "json"
-	fmtYAML OutputFormat = "yaml"
-)
-
 // Set validates and sets the value of the OutputFormat
 func (f *OutputFormat) Set(s string) error {
 	for _, of := range []OutputFormat{fmtJSON, fmtYAML} {