chore: use k8s.io/apimachinery/pkg/util/sets #1765
Description
k8s apimachinery has a handy sets package, so that we wouldn't have to use map[string]struct{}. We should migrate existing instances to sets
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k8s apimachinery has a handy sets package, so that we wouldn't have to use map[string]struct{}. We should migrate existing instances to sets