[UX] Fix default value of ImageRegistry in odo preference view output (…

…redhat-developer#6951)

* [UX] Fix default value of ImageRegistry in odo preference view output

Signed-off-by: Parthvi <parthvi.vala@gmail.com>

* Update pkg/preference/machine_output.go

Co-authored-by: Armel Soro <armel@rm3l.org>

---------

Signed-off-by: Parthvi <parthvi.vala@gmail.com>
Co-authored-by: Armel Soro <armel@rm3l.org>

pkg/odo/cli/preference/view.go

@@ -81,7 +81,7 @@ func HumanReadableOutput(preferenceList api.PreferenceList, registryList []api.R
 	preferenceT.SortBy([]table.SortBy{{Name: "PARAMETER", Mode: table.Asc}})
 	for _, pref := range preferenceList.Items {
 		value := showBlankIfNil(pref.Value)
-		if reflect.DeepEqual(value, pref.Default) {
+		if value != "" && reflect.DeepEqual(value, pref.Default) {
 			value = fmt.Sprintf("%v (default)", value)
 		}
 		preferenceT.AppendRow(table.Row{pref.Name, value})