Adapt k8s to v1.19.3. #1268

Job	Run time
ci (release)	8m 57s
ci (unit-tests)	1h 12m 40s
ci (e2e-tests-airflow-integration)	32m 9s
ci (e2e-tests-assembly-local)	1h 11m 58s
ci (e2e-tests-assembly-distributed)	1h 12m 34s
ci (e2e-tests-autogenerated-helm-chart)	31m 20s
ci (e2e-tests-failover)	1h 12m 30s
ci (e2e-tests-repartition-dask)	1h 12m 38s
ci (e2e-tests-schedule-workflow)	1h 13m 2s
ci (e2e-tests-schedule-workflow-without-crd)	31m 42s
ci (e2e-tests-schedule-workload)	32m 58s
ci (e2e-tests-serialize)	1h 11m 55s
ci (e2e-tests-sidecar)	1h 12m 12s
ci (e2e-tests-spill)	1h 11m 45s
ci (e2e-tests-workflow)	1h 12m 34s
ci (e2e-tests-mars-examples)	8m 55s
ci (e2e-tests-vineyardctl)	1h 11m 29s
ci (e2e-tests-deploy-raw-backup-and-recover)	51m 36s
	16h 32m 54s

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