GUI-1152 Check for validation error in group name update and move the validation error message to the view for i18n

https://eucalyptus.atlassian.net/browse/GUI-1152
Let's rename this to 'controller_options_json', per my other comment in this PR.  Also, we should use include all options passed to the controller in the controller_options_json string.  See InstanceView.get_controller_options_json() for an example.