**Description**

Currently when `ECSOperator` is run, the logs of the ECS task are fetched only when the task is done. That's not so convenient, especially when the task takes some good amount of time. In order to understand what's happening with the task, I need to go to Cloudwatch and search for the tasks logs. It would be good to have some parallel process that could fetch ECS task logs from Cloudwatch and make them visible in a realtime. 

**Are you willing to submit a PR?**

I can try, but I need to be guided.

tests/providers/amazon/aws/operators/test_ecs.py
wait_mock.assert_called_once_with()
        check_mock.assert_called_once_with()
        xcom_del_mock.assert_called_once()
        assert self.ecs.arn == 'arn:aws:ecs:us-east-1:012345678910:task/d8c67b3c-ac87-4ffe-a847-4785bc3a8b55'
    @parameterized.expand(
        [
            ['EC2', None],
            ['FARGATE', None],
            ['EC2', {'testTagKey': 'testTagValue'}],
            ['', {'testTagKey': 'testTagValue'}],
        ]
    )
    @mock.patch.object(ECSOperator, '_xcom_del')
    @mock.patch.object(ECSOperator, '_xcom_set')
    @mock.patch.object(ECSOperator, '_try_reattach_task')
    @mock.patch.object(ECSOperator, '_wait_for_task_ended')
    @mock.patch.object(ECSOperator, '_check_success_task')
    def test_reattach_save_task_arn_xcom(
        self, launch_type, tags, check_mock, wait_mock, reattach_mock, xcom_set_mock, xcom_del_mock
    ):
        self.set_up_operator(launch_type=launch_type, tags=tags)  
        client_mock = self.aws_hook_mock.return_value.get_conn.return_value
        client_mock.describe_task_definition.return_value = {'taskDefinition': {'family': 'f'}}
        client_mock.list_tasks.return_value = {'taskArns': []}
        client_mock.run_task.return_value = RESPONSE_WITHOUT_FAILURES
        self.ecs.reattach = True
        self.ecs.execute(self.mock_context)
        self.aws_hook_mock.return_value.get_conn.assert_called_once()
        extend_args = {}
        if launch_type: