[bitnami/zookeeper] allow for overriding namespace in zookeeper helm chart

[monicaruttle]

Description of the change

Allow for overriding the namespace that the ZooKeeper helm chart resources use.

Benefits

When ZooKeeper is included as a dependency of another helm chart, the preferred behaviour may be for it to be released into a different namespace than the parent. This change will allow for the parent chart values to override the namespace.

Possible drawbacks

Unknown

Applicable issues

• addresses Zookeeper namespace override #3864

Additional information

By default behaviour will not change from taking the Release.Namespace value for the namespace.

Checklist

• Chart version bumped in Chart.yaml according to semver.
• Variables are documented in the README.md
• Title of the PR starts with chart name (e.g. [bitnami/chart])
• If the chart contains a values-production.yaml apart from values.yaml, ensure that you implement the changes in both files

[glothriel]

@juan131 I think you may be interested in this one :-)

Personally I like the idea, with some changes:

• I've seen somewhere (charts/stable?) similar approach, but the field there was named namespaceOverride, for some reason I like it more
• I'd extract this logic to a template

Note: I'm not Bitnami employee nor this repo co-maintainer, this is only my opinion, so don't treat this propositions as obligatory.

[miguelaeh]

Hi @monicaruttle ,
Thank you very much for the PR!
Please take a look at the files carefully, there are some places where the namespace is used that also need to be changed.
Apart from that, I agree with @glothriel in use namespaceOverride and a template to select the namespace instead of repeating the logic in all the files.

[dani8art]

Hi @monicaruttle thanks for applying the changes.

Please, take a look at my comments.

[dani8art]

LGTM