Add a tool to measure the performance characteristics of providers

[sergenyalcin]

Description of your changes

With this PR, a tool is added to measure the performance characteristics of providers.

I have:

• Run make reviewable test to ensure this PR is ready for review.

[Piotr1215]

Thank you for putting this together @sergenyalcin , it has been invaluable help in the provider Azure performance tests.

[Piotr1215]

@sergenyalcin as we briefly discussed, it would be great to add two new functionalities to the tool:

Gather processes from the provider pod

On top of measuring resources utilization, we also want to record processes running in the provider pod to make sure there are no zombie processes 🧟 . A potential implementation idea would be to kick off a separate routine to run the command ps -o pid,ppid,etime,comm,args and capture output to a file.

Capture state of managed resources

In the middle of the experiment, before resources are deleted, we could capture the state of all managed resources with kubectl get managed -o yaml. From there we could check for any additional errors with grep or with the tool itself and save the file for further interrogation.

[ulucinar]

Thanks @sergenyalcin, left some comments for you to consider. I think the only blocking comment is the one from @Piotr1215, regarding the metadata naming of the test resources. Thank you very much.

[ulucinar]

nit: We may consider using a string here to support metrics of other types, especially state metrics. But my understanding is that we currently support model.Matrix as of now, so this should be fine.