(fix) test_k8s/dumps/xml_sql: define both the pod_override and pod_template_file executor configs
As both KUBERNETES_POD_OPERATOR_BASE_KWARGS and base_operator_kwargs
were defining the executor_config key, the last one to be merged in
would "win" and erase the other subkey.
Example:
>>> d1 = {'executor_config': {'pod_override': 'xxx'}}
>>> d2 = {'executor_config': {'pod_template_file': 'yyy'}}
>>> d1 | d2
{'executor_config': {'pod_template_file': 'yyy'}}
Signed-off-by: Balthazar Rouberol brouberol@wikimedia.org Bug: T388378
Closes T388378