[Rdo-list] Packstack and rdo-manager, looking forward.

[Adam Young]

RDO Manager does a lot more than packstack.  Too much, for many use 
cases, which is why we have people continuing to use packstack. Where do 
people use packstack?

1.  Demos
2.  Development Work
3.  CI

I'm sure there are others, but lets start there.  I personally need 
support for use cases 1 and 2. Can we get to the point where rdo-manager 
can support these use cases?

There are, as I can see it, two potential approaches that could make 
this work:

1.  Treat the undercloud deployment as an all-in-one, and not deploy the 
overcloud.
2.  Have rdo-manager assume that the undercloud is already deployed, and 
only deploy the overcloud.

Are there others?

I think that 2 is an interesting option?  What if ... we took something 
like the next gen oslab and put only an rdo-manager undercloud out on 
it?  Then...allowed multiple people to run rdo-manager --overcloud 
against it, perhaps each with their own slice?

  I'm already deploying OpenStack on OpenStack.  If most of the business 
logic/value add comes from the overcloud, can we split the deployment 
along these lines?