Merge pull request #1789 from adamreese/fix/tiller-ns-envar

fix(tiller): s/POD_NAMESPACE/TILLER_NAMESPACE/

cmd/tiller/tiller.go

@@ -139,7 +139,7 @@ func start(c *cobra.Command, args []string) {
 
 // namespace returns the namespace of tiller
 func namespace() string {
-	if ns := os.Getenv("POD_NAMESPACE"); ns != "" {
+	if ns := os.Getenv("TILLER_NAMESPACE"); ns != "" {
 		return ns
 	}