Hello.

Kubernetes generates a unique pod name.
https://github.com/apache/airflow/blob/736a62f824d9062b52983633528e58c445d8cc56/airflow/kubernetes/pod_generator.py#L434-L458
It would be great if the pod name was available in Airflow after completing the task, so that, for example, we could use it to add [extra links](http://airflow.apache.org/docs/apache-airflow/stable/howto/define_extra_link.html) or use it as an argument in downstream tasks. To do this, we should save this name in XCOM table.

The operator for BigQuery works in a similar way.
https://github.com/apache/airflow/blob/736a62f824d9062b52983633528e58c445d8cc56/airflow/providers/google/cloud/operators/bigquery.py#L730
Thanks to this, we have links to the BigQuery console.
https://github.com/apache/airflow/blob/736a62f824d9062b52983633528e58c445d8cc56/airflow/providers/google/cloud/operators/bigquery.py#L600-L605
https://github.com/apache/airflow/blob/736a62f824d9062b52983633528e58c445d8cc56/airflow/providers/google/cloud/operators/bigquery.py#L57-L86

Best regards,
Kamil Breguła


kubernetes_tests/test_kubernetes_pod_operator.py
).strip()
            assert any(line.startswith(expected_line) for line in cm.output)
        actual_pod = self.api_client.sanitize_for_serialization(k.pod)
        expected_dict = {
            'apiVersion': 'v1',
            'kind': 'Pod',
            'metadata': {
                'annotations': {},
                'labels': {
                    'dag_id': 'dag',
                    'execution_date': mock.ANY,
                    'kubernetes_pod_operator': 'True',
                    'task_id': mock.ANY,
                    'try_number': '1',
                },
                'name': 'memory-demo',
                'namespace': 'mem-example',
            },
            'spec': {
                'affinity': {},
                'containers': [
                    {
                        'args': ['--vm', '1', '--vm-bytes', '150M', '--vm-hang', '1'],
                        'command': ['stress'],
                        'env': [],
                        'envFrom': [],
                        'image': 'apache/airflow:stress-2021.04.28-1.0.4',
                        'imagePullPolicy': 'IfNotPresent',
                        'name': 'base',
                        'ports': [],