helm charts common features

[gilesknap]

At present bl38p and other domain repos have a great deal of shared code in their helm charts.

This has been convenient for dev but now it's time to factor these out into a helm chart repository. I have started this work here https://github.com/epics-containers/ec-helm-charts/actions/runs/6609481198

I need to work out what the best way to do this is for beamline-chart

• use global values
• use a library chart
• something else

Goals are minimum boilerplate in the blxxp and least complicated values.yaml in ioc instance (remembering that docker local deploys read this file too)

[gilesknap]

Note that this change would not affect the tutorials much so postponing this until Nov.

[gilesknap]

This is done.

The helm charts are here: https://github.com/epics-containers/ec-helm-charts

the beamline one is a library chart - the beamlines themselves still create a chart for ingesting config folder but mainly supply Values to the library chart.