Update to ARM worker node types

[kami619]

Fixes #1022

[ahus1]

Thank you - I think it will be green when you roll back the changes in provision/minikube/keycloak/templates/keycloak.yaml, the build will be green. Still, we might want those changes to be able to test in a mixed cluster, so then they would need to be conditional on an architecture selector.

[mhajas]

We can use this in keycloak.yaml

{{ if eq .Values.environment "openshift" }}

[ahus1]

Hm, with the change {{ if eq .Values.environment "openshift" }} we now enforce ARM on OpenShift all the time. We would need to do this only on mixed clusters, as arm would be the default anyway in a pure ARM cluster. I'll comment in the parent issue about what is in scope and what not.

[mhajas]

I am merging this so we have the results on Monday