[bitnami/rabbitmq] allow to configure trafficDistribution

[rossifumax]

Hello !

Description of the change

Add trafficDistribution feature on svc-headless of RabbitMQ.
This feature is available since k8s v1.31.

Benefits

Take advantage of the new feature trafficDistribution.
cf. https://kubernetes.io/docs/concepts/services-networking/service/#traffic-distribution

Possible drawbacks

Normally, no drawbacks.

Checklist

• Chart version bumped in Chart.yaml according to semver. This is not necessary when the changes only affect README.md files.
• Variables are documented in the values.yaml and added to the README.md using readme-generator-for-helm
• Title of the pull request follows this pattern [bitnami/<name_of_the_chart>] Descriptive title
• All commits signed off and in agreement of Developer Certificate of Origin (DCO)

[alvneiayu]

hi @rossifumax

first of all, thanks a lot for your PR.

I have a question about your changes. Why by default "PreferClose"? Maybe it is a good idea to set up the value to empty one and just include the trafficDistribution in case that the users want to set up it to trafficDistribution. What do you think?

Thanks a lot again

Álvaro

[rossifumax]

Hello @alvneiayu,

In my opinion, the default value should be set to PreferClose for all services for various reasons (performance, cost, reliability).
However, depending on the use cases, it might be necessary to change this setting when pods on the same node or zone become overloaded.

What do you think ?

[rossifumax]

Hello @alvneiayu

Btw, i already had a conversation about this feature and the defaults to apply on the Opensearch helm chart if you want to take a look : #32442 (comment)

Regards

[alvneiayu]

awesome @rossifumax , thanks a lot for your answer. Everything clear then on my side. Again, thanks a lot for your contribution

[alvneiayu]

LGTM