use MCR image for istio cert refresher pod #1030

Job	Run time
Deploy global resources	6m 14s
Build service images / build_push_ocmirror	4m 6s
Build service images / build_push_backend	5m 59s
Build service images / build_push_frontend	6m 10s
Build service images / build_push_imagesync	4m 22s
Deploy Image Sync	3m 37s
Deploy CS PR infrastructure / deploy_region_rg	5m 25s
Deploy integrated DEV infrastructure / deploy_region_rg	5m 40s
Deploy CS PR infrastructure / deploy_management_cluster_rg	9m 41s
Deploy CS PR infrastructure / deploy_service_cluster_rg	21m 58s
Deploy integrated DEV infrastructure / deploy_management_cluster_rg	9m 39s
Deploy integrated DEV infrastructure / deploy_service_cluster_rg	20m 40s
Deploy services to integrated DEV / deploy_to_service_cluster	4m 35s
Deploy services to integrated DEV / deploy_to_management_cluster	4m 10s
Deploy services to CS PR / deploy_to_service_cluster	4m 24s
Deploy services to CS PR / deploy_to_management_cluster	4m 19s
	2h 0m 59s

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