Installer doesn't reject installation when platform is baremetal and the baremetal capability is disabled

The installer doesn't refuse to install if the platform is baremetal and the baremetal capability is disabled.

4.13

Always.

1. Create a cluster using `platform.type: baremetal` and disabling the `baremetal` capability.

Installation hangs with `bootkube.sh` and `cluster-bootstrap` repeatedly waiting for the `99_baremetal-provisioning-config.yaml`  manifest (and any other metal3.io related manifests) to be applied.

The installation is refused immediately with an error message explaining that disabling the `baremetal` capability is incompatible with the baremetal platform.

[core@api ~]$ journalctl -f -u bootkube.service
Apr 12 13:41:03 api.kni-qe-51.lab.eng.tlv2.redhat.com cluster-bootstrap[154439]: [#145] failed to create some manifests:
Apr 12 13:41:03 api.kni-qe-51.lab.eng.tlv2.redhat.com cluster-bootstrap[154439]: "99_baremetal-provisioning-config.yaml": unable to get REST mapping for "99_baremetal-provisioning-config.yaml": no matches for kind "Provisioning" in version "metal3.io/v1alpha1"