Need to change the comment in /usr/share/openstack-tripleo-heat-templates/environments/ips-from-pool-ctlplane.yaml 

Currently the comment says:
# Environment file demonstrating how to pre-assign provisioning IPs on the
# boot NIC to all node types. In order to use this file, set
# ctlplane_fixed_ip to True in the role definition, otherwise these
# settings will be ignored.


This needs to change to something like:

# Environment file demonstrating how to pre-assign provisioning IPs on the
# boot NIC to all node types. The list entries are <role>IPs. Please note that if # "deprecated_param_ips: 'NovaComputeIPs'" is not removed from Compute role in 
# roles_data.yaml, then you'd have to specify NovaComputeIPs instead of          # ComputeIPs.