This introduce needed changes to be able to deploy an additional
cell via oooq. If additional_cell is set to true after the
overcloud got deployed the additional cell gets deployed. Todo
this information gets extracted from the overcloud stack, which
is requried as input to the second heat stack, where the additional
cell is managed with. As a reference [1] is the scenario which
is installed adding a single additional cell.
config/general_config/featureset063.yml is used for the configuration
and config/nodes/1ctlr_1cellctrl_1comp.yml has a nova config
example.
[1] https://docs.openstack.org/project-deploy-guide/tripleo-docs/latest/features/deploy_cellv2_basic.html
Change-Id: Ib30a83f4a0bc3e503b422f8b5098c60133614959
3bf4667ee1