fix: Don't rewrap JSON output (#332)

This makes the output of `-o json` more similar to what the raw response
would be.

pkg/printer/printer.go

@@ -73,9 +73,7 @@ func (p *JSONPrinter) write(out io.Writer, v interface{}) error {
 			return err
 		}
 	default:
-		var msg DefaultMsgPrint
-		msg.Message = v
-		err := WriteJSON(&msg, out)
+		err := WriteJSON(v, out)
 		if err != nil {
 			return err
 		}
@@ -181,10 +179,6 @@ func (p *TextPrinter) SetStderr(writer io.Writer) {
 	p.Stderr = writer
 }
 
-type DefaultMsgPrint struct {
-	Message interface{} `json:"Message,omitempty"`
-}
-
 type ToPrint struct {
 	Message string
 }

pkg/printer/printer_test.go

@@ -93,9 +93,7 @@ func TestPrinterPrintStandardResultJson(t *testing.T) {
 func TestPrinterPrintDefaultJson(t *testing.T) {
 	var (
 		b   bytes.Buffer
-		str = `{
-  "Message": "command executed"
-}`
+		str = `"command executed"`
 	)
 	viper.Set(constants.ArgOutput, "json")
 	viper.Set(constants.ArgServerUrl, constants.DefaultApiURL)