Simple_cell_setup is not recomended to use.
Is better create map_cell0 manually, create base
cell for non cell deployments and run discover_hosts.
This PS migrate actual config to make use of described
workflow at [1]. We our actual workflow we're running
into the issue that services are not mapped until cells
are present, breaking deployment waiting for compute
services to appear.
[1] https://docs.openstack.org/developer/nova/cells.html#fresh-install
Change-Id: Id061e8039e72de77a04c51657705457193da2d0f
Closes-Bug: #1682060