Add support for XCom to Armada operator for airflow

[michelsumbul]

Hi,

We would to add the support for XCom for the armada operator in airflow. For information here is a doc on what is XCom: https://airflow.apache.org/docs/apache-airflow/stable/core-concepts/xcoms.html

Here is a doc explaining how the XCom work with the KubernetesPodOperator: https://airflow.apache.org/docs/apache-airflow-providers-cncf-kubernetes/stable/operators.html

Thanks, Michel

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