Helm Chart: Add affinity to the fluent-operator deployment object

[soundarya2606]

Is your feature request related to a problem? Please describe.

The helm chart does not allow to add affinity to the pods created by the fluent-operator deployment object. Only the fluent-bit pods allow that through the helm chart.

Describe the solution you'd like

Ability to add Affinity and anti-affinity rules for the fluent-operator pods scheduling on nodes.

Additional context

No response