PR https://github.com/kubernetes/kubernetes/pull/80301 rename the preferred policy to best-effort, but the files names are still policy_preferred.go and policy_preferred_test.go. This PR fix that.
PR https://github.com/kubernetes/kubernetes/pull/80301 rename the preferred policy to best-effort, but the files names are still policy_preferred.go and policy_preferred_test.go. This PR fix that.