Cherry-pick https://github.com/opendatahub-io/odh-model-controller/pull/256

[spolti]

…in Kserve Performance metrics (#256)

Description

How Has This Been Tested?

Merge criteria:

• The commits are squashed in a cohesive manner and have meaningful messages.
• Testing instructions have been added in the PR body (for PRs involving changes that are not immediately obvious).
• The developer has manually tested the changes and verified that the changes work

[Jooho]

I didn't test this but from the source perspective, it looks good to me. How do we test this?

[Jooho]

for now, we can move forward but for next time, we should think of integrating some verification process with PRs.

[Jooho]

/lgtm

[openshift-ci]

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