Custom graph builder

[willcl-ark]

I am happy to take a stab at implementing a custom graph builder, which I think y'all will want for tabconf?

I have some design/impl Qs before doing so...

We will want to be able to:

• Choose total number of nodes
• Choose number of namespaces
• Choose number of node@version's per namespace
• Connect them all

I don't know much about the namespace stuff, but it appears our command currently only "deploys n namespaces", so we would then need to apportion the nodes amongst those namespaces.

However I don't see we have a way of doing that yet. Presently we pull the namespace from values.yaml, which I suppose means that it shoudl be as simple as adding a namespace: k:v object to network.yaml, for the chart to read and use.

Does this ^ sound correct?