Sends exit to the remote shell.

        If there are stopped jobs then this automatically sends exit twice.

def logout (self):
        '''Sends exit to the remote shell.

        If there are stopped jobs then this automatically sends exit twice.
        '''
        self.sendline("exit")
        index = self.expect([EOF, "(?i)there are stopped jobs"])
        if index==1:
            self.sendline("exit")
            self.expect(EOF)
        self.close()