In addition, this replaces the combination of GetCPUSummary() and FormatCPUSummary() with LogCPUSummary() in e2e/node/kubelet_perf.go because that is completely same.
In addition, this replaces the combination of GetCPUSummary() and FormatCPUSummary() with LogCPUSummary() in e2e/node/kubelet_perf.go because that is completely same.