replicationPolicy missing numberReplicas and replicationAllowed attributes
While technically optional, the ReplicationPolicy class in SystemMetadata is not useful without the replicationAllowed and numberReplicas attributes. We encountered a bug in the R client where the parser assumed those would be present (https://github.com/ropensci/datapack/issues/63). We fixed that client side, but it would also be useful to have Metacat generate ReplicationPolicy instances with these attributes set. This is handled in SystemMetadataFactory.getDefaultReplicationPolicy().