I think this is wrong. Should be called `EXTENDED_READ`, and should be implied by `Computer.CONFIGURE`, not `READ` which almost anyone has. Compare `Item.EXTENDED_READ`.

Not just anyone should be able to see a slave’s `config.xml`; this might have confidential information about e.g. SSH connections. In principle it should not have actual _passwords_, but there might be sensitive hostnames, environment variables, etc.