chore: Migrate gsutil usage to gcloud storage#514

gurusai-voleti wants to merge 3 commits intogoogleapis:maingoogleapis/testing-infra-docker:mainfrom

gurusai-voleti:ai-gsutil-migration-065721d965214436933090102f44ef5agurusai-voleti/testing-infra-docker:ai-gsutil-migration-065721d965214436933090102f44ef5aCopy head branch name to clipboard