Aim of this RFE
The objective of this RFE is to make all prometheus components configurable in Openshift user workload monitoring

Why is this required by the customer
In the user-workload-monitoring configmap:
Requests and limits can currently only be set for prometheus-user-workload pods, not for the thanos sidecar container.

For example, as per documentation we are given the option to set resource limits for alertmanager, prometheus, and thanosruler. However a limit for the thanos sidecar container still cannot be configured here, which can lead to problems.

For example, this can result in large memory pressure from the Thanos sidecar container and can lead to nodes becoming unavailable.