Heat templates for deploying OpenStack
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Cell_v2 discovery has been moved from the nova-compute|nova-ironic
containers as this requires nova api database credentials which must
not be configured for the nova-compute service.
As a result scale-up deployments which explicitly omit the Controller
nodes will need to make alternative arrangements to run cell_v2 discovery.
Either the nova-manage command can be run manually after scale-up, or
an additional helper node using the NovaManage role can be deployed that
will be used for this task instead of a Controller node. See Bug:
`1786961 <https://launchpad.net/bugs/1786961>`_ and Bug:
`1871482 <https://launchpad.net/bugs/1871482>`_.