added radio button shouldUpdate

Signed-off-by: Matt Bruce <matt.bruce@verizon.com>

VDS/Components/RadioButton/RadioButton.swift

@@ -165,5 +165,13 @@ open class RadioButtonBase<ModelType: RadioButtonModel>: SelectorBase<ModelType>
             }
         }
     }
-
+    
+    open override func shouldUpdateView(viewModel: ModelType) -> Bool {
+        return viewModel.selected != model.selected
+        || viewModel.labelText != model.labelText
+        || viewModel.childText != model.childText
+        || viewModel.showError != model.showError
+        || viewModel.surface != model.surface
+        || viewModel.disabled != model.disabled
+    }
 }