client wrapper for kernel_status
             Parameters
            ==========
            kernel_opt: additional option from the client, if kernel not defined

def kernels_status_cli(self, kernel, kernel_opt=None):
        """ client wrapper for kernel_status
             Parameters
            ==========
            kernel_opt: additional option from the client, if kernel not defined
        """
        kernel = kernel or kernel_opt
        response = self.kernels_status(kernel)
        status = response['status']
        message = response['failureMessage']
        if message:
            print('%s has status "%s"' % (kernel, status))
            print('Failure message: "%s"' % message)
        else:
            print('%s has status "%s"' % (kernel, status))