Use predictable placement by default

[Chris Jones]

Quickstart creates nodes in Ironic with names that imply which overcloud node they will be, but there is no scheduler hinting to make the deployment line up with the names.

I think this would just be a case of tagging the nodes in Ironic with their name, and using something like:

parameter_defaults:
    ControllerSchedulerHints:
        'name': 'control-%index%'

etc.

[Chris Jones (cmsj)]

(hint to future self, the tagging should probably happen in tripleo-common's actions/baremetal.py in RegisterOrUpdateNodes)

[John Trowbridge (trown)]

moved to tripleo launchpad with quickstart tag

I think this is really a CI feature request. We would like to be testing predictable placement in CI, so we need to have the feature in tripleo-quickstart-extras.

[Ben Nemec (bnemec)]

We should not be testing with predictable placement by default. It's not the tripleo default, nor should it be. We should test the defaults by default as much as possible.

That said, we _should_ be testing predictable placement. We used to, and lost it in the quickstart transition.