Remove non-baremetal flavors in setup-baremetal.
Remove non-baremetal flavors in setup-baremetal.

Currently it's impossible to mix baremetal and non-baremetal
hypervisors. We could leave the flavors intact, but that just makes it
possible for users to shoot themselves in the foot trying to boot
instances on them.

Change-Id: I7f60d0449f2881702574527c8ddb34526aaea8f4

rdo-management/tripleo,rdo-management/tripleo