Optional IAM role that is used to access the workspace catalog which is created during workspace creation
for UC by Default. If a storage configuration with this field populated is used to create a workspace,
then a workspace catalog is created together with the workspace. The workspace catalog shares the root
bucket with internal workspace storage (including DBFS root) but uses a dedicated bucket path prefix.
Optional IAM role that is used to access the workspace catalog which is created during workspace creation for UC by Default. If a storage configuration with this field populated is used to create a workspace, then a workspace catalog is created together with the workspace. The workspace catalog shares the root bucket with internal workspace storage (including DBFS root) but uses a dedicated bucket path prefix.