Consider creating a util package for mergeMaps, etc.

[sbueringer]

Follow-up:

I think we should move merge map (and potentially similar things) in a shared util, but this is out of scope of this PR
#8171 (comment)

/kind cleanup

[fabriziopandini]

/triage accepted
/help

Let's keep this scoped to mergeMaps, so it is already actionable

[k8s-ci-robot]

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In response to this:

/triage accepted
/help

Let's keep this scoped to mergeMaps, so it is already actionable

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[LuBingtan]

/assign