'create a default rolebinding as a dict'

def create_dict(self):

    self.data['apiVersion'] = 'v1'
    self.data['kind'] = 'RoleBinding'
    self.data['groupNames'] = self.group_names
    self.data['metadata']['name'] = self.name
    self.data['metadata']['namespace'] = self.namespace
    self.data['roleRef'] = self.role_ref
    self.data['subjects'] = self.subjects
    self.data['userNames'] = self.usernames
