Description of problem: Engine allows to deploy a host as hosted engine host even in a bare metal deployment This shouldn't happen also because no configuration is available to be sent to host-deploy
Perhaps change summary line, and change our terminology all-around, to 'standalone' instead of 'bare metal'. Engine can also run in a "normal" libvirt/kvm VM, and it can also run in a vm managed by another engine (not itself).
See comment 1 in the duplicate bz: " It should allow to make a standard host an HE node /if hosted engine is already installed/. " *** This bug has been marked as a duplicate of bug 1369827 ***