98ee52ed78
Automatic merge from submit-queue (batch tested with PRs 47675, 48001) Encodes ReportPrefix into the generated metrics file names Ref: https://github.com/kubernetes/kubernetes/issues/44003 Adds the test prefix to be part of the name. Otherwise the same test case running on different images will override each other. Nothing needs to be changed at the node-perf-dash side. See test run at https://console.cloud.google.com/storage/browser/ygg-gke-dev-bucket/e2e-node-test/ci-kubernetes-node-kubelet-benchmark/10. **Release note**: ``` None ``` /sig node /area node-e2e /assign @Random-Liu