Merge "Support multiple nova cells"

ansible/group_vars/all.yml

ansible/inventory/all-in-one

ansible/inventory/multinode

ansible/nova.yml

ansible/roles/nova-cell/defaults/main.yml

ansible/roles/nova-cell/filter_plugins/filters.py

ansible/roles/nova-cell/handlers/main.yml

ansible/roles/nova-cell/tasks/bootstrap.yml

ansible/roles/nova-cell/tasks/bootstrap_service.yml

ansible/roles/nova-cell/tasks/bootstrap_upgrade.yml

ansible/roles/nova-cell/tasks/cell_proxy_loadbalancer.yml

ansible/roles/nova-cell/tasks/ceph.yml

ansible/roles/nova-cell/tasks/check-containers.yml

ansible/roles/nova-cell/tasks/config-nova-fake.yml

ansible/roles/nova-cell/tasks/config.yml

ansible/roles/nova-cell/tasks/config_bootstrap.yml

ansible/roles/nova-cell/tasks/create_cells.yml

ansible/roles/nova-cell/tasks/deploy.yml

ansible/roles/nova-cell/tasks/discover_computes.yml

ansible/roles/nova-cell/tasks/external_ceph.yml