Bobgy: Use cloud build to build images instead

JobBuild
1923
08-22 10:44
kubeflow-pipeline-e2e-test 1164727606679965696 1164706216916553728 1164488384979144704
kubeflow-pipeline-sample-test 1164727606679965698 1164706216920748033 1164488384974950401
kubeflow-pipeline-upgrade-test 1164727606679965697 1164706216887193600 1164488384974950400