Check to see if a fresh AES key is available and update the components
        of the worker

def _update_aes(self):
        '''
        Check to see if a fresh AES key is available and update the components
        of the worker
        '''
        if salt.master.SMaster.secrets['aes']['secret'].value != self.crypticle.key_string:
            self.crypticle = salt.crypt.Crypticle(self.opts, salt.master.SMaster.secrets['aes']['secret'].value)
            return True
        return False