[bitnami/common] Add the ability to specify namespaces for affinity

[klamas1]

Description of the change

Added the ability to specify namespaces for affinity

Benefits

You can create affinity and antiaffinity for workloads in different namespaces (I agree, this is a corner case, but still)

Possible drawbacks

None
By default, the behavior of templates does not change

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)

[carrodher]

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[klamas1]

It seems I broke everything and will have to create a new PR #29479