Delete the cert manager dependencies and generate the self-signed CA … #1249

Job	Run time
ci (release)	11m 13s
ci (unit-tests)	15m 37s
ci (e2e-tests-airflow-integration)	16m 14s
ci (e2e-tests-assembly-local)	19m 30s
ci (e2e-tests-assembly-distributed)	17m 38s
ci (e2e-tests-autogenerated-helm-chart)	19m 12s
ci (e2e-tests-failover)	17m 36s
ci (e2e-tests-repartition-dask)	20m 36s
ci (e2e-tests-schedule-workflow)	15m 46s
ci (e2e-tests-schedule-workflow-without-crd)	14m 41s
ci (e2e-tests-schedule-workload)	16m 22s
ci (e2e-tests-serialize)	15m 52s
ci (e2e-tests-sidecar)	15m 45s
ci (e2e-tests-spill)	15m 33s
ci (e2e-tests-workflow)	16m 9s
ci (e2e-tests-mars-examples)	11m 18s
ci (e2e-tests-vineyardctl)	16m 2s
ci (e2e-tests-deploy-raw-backup-and-recover)	16m 54s
	4h 51m 58s

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