Rather than use simple_cell_setup which expects that there are already
existing computes, this change uses map_cell0 & create_cell to setup
cell_v2. Once the computes are configured, the cell_v2 discover_hosts
should be used to finalized the installation.
In addition, the db syncs need to be reordered as the api db sync
should run before the the cell_v2 setup. The main db sync should run
after.
map_cell0/simple_cell_setup now uses main nova DB connection instead
of the api DB connection.
Change-Id: I591b451197dc3bd0783978f5e3d2b1c830afe54e
Closes-Bug: #1656276
Related-Bug: #1656673
Co-Authored-By: Alex Schultz <aschultz@redhat.com>
dc2f3a3586