New docker_hub_mirror_pvc_size setting, separate for prod/staging
Previously the PVC size for docker-hub-mirror was hard-coded to 10Gi
and used in both production and staging clusters. Now
docker_hub_mirror_pvc_size can be specified separately for each
cluster.
Related MRs:
- !409 (merged)
- !408 (merged) (This MR)
- main