for i := range terms {
		terms[i].MatchLabelKeys = nil
		terms[i].MismatchLabelKeys = nil
	}
}

// matchLabelKeysFieldInPodAffinityInUse returns true if given affinityTerms have MatchLabelKeys field set.
func matchLabelKeysFieldInPodAffinityInUse(podSpec *api.PodSpec) bool {
	if podSpec == nil || podSpec.Affinity == nil {
		return false
	}