fix: set base_log_folder to display task logs in the UI

[sweb]

Description

The Airflow UI should be able to show task logs which are requested from the worker pod. This requires setting BASE_LOG_FOLDER to the correct place, which differs from our log mount - this PR fixes that.

Definition of Done Checklist

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Author

• Changes are OpenShift compatible
• CRD changes approved
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• Changes need to be "offline" compatible
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Reviewer

• Code contains useful comments
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• (Integration-)Test cases added
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• Changelog updated
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Acceptance

• Feature Tracker has been updated
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• Links to generated (nightly) docs added
• Release note snippet added
• Add type/deprecation label & add to the deprecation schedule
• Add type/experimental label & add to the experimental features tracker

[adwk67]

@sbernauer I'm not the best person to review this as I co-authored it

[razvan]

lgtm with two small suggestions

[sweb]

addressed comments and resolved conflict