What would you like to be added:

I would love to ask for the recommendation on High Availability setup for kube-state-metrics.

Why is this needed:

We use some of kube-state-metrics metrics to calculate our service SLI metric. Unfortunately during host rebalancing or host upgrades we do get gaps in SLI metrics because kube-state-metrics gets restarted/rescheduled (becomes unavailable).

Describe the solution you'd like

It would be great to have a paragraph in the README describing HA setup, similar to scaling recommendations.

Additional context

We're using kube-state-metrics bundled by kube-prometheus project (which does run a single instance of kube-state-metrics).