use gcr.io/k8s-staging-test-infra instead of gcr.io/k8s-testimages#278

k8s-ci-robot merged 1 commit intokubernetes-csi:masterkubernetes-csi/csi-release-tools:masterfrom

liangyuanpeng:migrate_k8s_testimagesliangyuanpeng/csi-release-tools:migrate_k8s_testimagesCopy head branch name to clipboard