implementation. For example you may use your own Prometheus and Grafana installs, or you may use a specialized/custom certificate provisioning tool, or use components that are centrally managed and running in a different cluster. This is a work in progress - building on top of the multi-cluster installer. As an extreme, the goal is to be possible to run Istio workloads in a cluster without installing any Istio component in that cluster. Currently, the minimum we require is the security provider (node agent or...