Machine API doesn't support `platform: baremetal`

[vrutkovs]

RHHI.Next clusters fail after bootstrap is complete:

oc --config ocp/auth/kubeconfig -n openshift-machine-api logs machine-api-operator-5bbc744598-cs6cm | tail -n 3
E0308 20:06:07.164857       1 operator.go:176] Failed getting operator config: no platform provider found on install config
E0308 20:06:27.657099       1 operator.go:176] Failed getting operator config: no platform provider found on install config
E0308 20:07:08.622265       1 operator.go:176] Failed getting operator config: no platform provider found on install config

/cc @booxter

[vrutkovs]

Seem #235 would fix that

[vrutkovs]

Fixed by #246, proper implementation with operator would be added in #235