Comment 2 for bug 1527594

If you create hiera override file with content(with highest priority in hiera):

quantum_settings:
 keystone:
   admin_password: 'passwd'

you get error in top-role-compute task(uses for compute/compute-vmware roles)

Error: $neutron_config["database"] is :undef, not a hash or array at /etc/puppet/modules/osnailyfacter/modular/roles/compute.pp:97

https://github.com/openstack/fuel-library/blob/stable/7.0/deployment/puppet/osnailyfacter/modular/roles/compute.pp#L96
(this fix in master branch)