Provide metrics and dashboards for PSI (Pressure Stall Information)

What is the nature and description of the request?

PSI metrics provide valuable information about the CPU, memory and IO pressure. We can for example see how much time a pod was limited on CPU by other processes or limits. In other workds we can see how much the limits affect the workload.

Why does the customer need this? (List the business requirements here)

It is a valuable metric that shows how much is a pod limited on its performance. In case of high pressure the admin can decide to increase the limits in order not to slow down the pod or provide suggestions to

More details about PSI

https://docs.kernel.org/accounting/psi.html