Remove baremetal flavor from instack-prepare-for-overcloud
Remove baremetal flavor from instack-prepare-for-overcloud

It isn't used anymore and it just confuses people.

Change-Id: I3997fe858096b84aab9dbb7e0f39c0d60a9b62d4

bcrochet/instack-undercloud,bcrochet/instack-undercloud,eprasad/instack-undercloud,rdo-management/instack-undercloud,dmsimard/instack-undercloud,dpkshetty/instack-undercloud,dmsimard/instack-undercloud,dpkshetty/instack-undercloud,eprasad/instack-undercloud,rdo-management/instack-undercloud