Update overcloud for Baremetal
Update overcloud for Baremetal

Baremetal fails because nodes aren't in hostvars

Don't touch existing nodes groups
New nodes need to set groups.

Change-Id: I680478239a2e58ac20540b0f7264212d4a945519

redhat-openstack/infrared,okolisny/InfraRed,okolisny/InfraRed,redhat-openstack/infrared,okolisny/InfraRed,redhat-openstack/infrared