Helm: Store charts in chart repository (k8s:helm-repo-index)

[manusa]

Description

Requires/blocked by #2392

k8s:helm-repo-index

In the scope of the Helm provided services, it would be nice to be able to create/update the index for a chart repository.

This step could be invoked after generating the Chart files /target/jkube/helm/${project.artifactId}, move the affected files to the specified location and update the related chart index.

So from https://helm.sh/docs/topics/chart_repository/#managing-chart-repositories:

$ helm package docs/examples/alpine/ #1
$ mkdir fantastic-charts #2
$ mv alpine-0.1.0.tgz fantastic-charts/ #3
$ helm repo index fantastic-charts --url https://fantastic-charts.storage.googleapis.com #4

The equivalent to steps #3 and #4.