Automatic merge from submit-queue. If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.
Adding unit tests to methods of 'scheduler/algorithm/priorities/util'
What this PR does / why we need it:
1) Adding unit tests to methods of 'non_zero.go'
2) Adding unit tests to methods of 'util.go'
3) Adding/Modifing unit tests to methods of 'topologies.go'
thank you!
a00b766ab0