feat: add airflow.extraPodSpec value

[Hosade]

What issues does your PR fix?

Ability to add misc. spec resources on pods

What does your PR do?

Add a extraPodSpec variable to allocate Spec of pods not anticipated by the chart.

Checklist

For all Pull Requests

• Commits are signed off
• Commits have semantic messages
• Documentation updated
• Passes ct linting

For releasing ONLY

• Chart.yaml version bumped
• CHANGELOG.md updated

[stale]

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[thesuperzapper]

Bumping for bot.

[thesuperzapper]

I am not sure this is a good idea, it will result in people breaking stuff and anyone who has such complex requirements can probably just fork the chart for their own purposes.

@Hosade Am I missing anything that might make this necessary?

[Hosade]

I am not sure this is a good idea, it will result in people breaking stuff and anyone who has such complex requirements can probably just fork the chart for their own purposes.

@Hosade Am I missing anything that might make this necessary?

Hi, necessary, I don't know. Forking (and maintaining the fork) for something that simple is kind of a pain. This would not break any existing setup and does not seem to be more error prone than other k8s concepts that we can find in the chart (pdb, affinity...)