Create hpa-scaling-alert.yaml #2107
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What does this PR do?
Adds an example monitor to alert when horizonatal pod autoscaler reaches the alerting status.
Motivation
HPAs are very helpful to automate the scaling. But what happens, when the HPA also reaches the maximum threshold?
Minimum Agent Versions
Describe your test plan
Ran the query against existing cluster and got the right data produced.
Checklist
bug
,enhancement
,refactoring
,documentation
,tooling
, and/ordependencies
qa/skip-qa
label