[Proposal] Add dask-gateway to this chart

[jhamman]

I think we're getting to the place where we can start thinking about how to include dask-gateway in this project. Just to quickly summarize some of the motivation for this proposal:

• Our current daskkubernetes RBAC gives all uses on the hub permissions to ["get", "list", "watch", "create", "delete"] any pods/services on the cluster. We've long known this is not a long term solution to allowing user to control their dask resources
• We don't have clean ways to limit users usage or resources.

Dask-gateway gives us the ability to solve both of these problems (and a few more). So what is our path toward adoption of the dask-gateway chart? Is it too soon? Is it missing features we think we should wait for? Would this change require us to disable the RBAC solution or is there a use case for keeping both solutions here?

cc @jcrist, @jacobtomlinson, @TomAugspurger, @yuvipanda

[rabernat]

I'm admittedly not up on many of the details, but think we should go all in on dask gateway!

[jcrist]

I'm finishing up some work making dask-gateway more compatible with the other dask clusters, which should make this change easier on your users. I think you may want to keep the user serviceaccounts around for a bit until things have seen more use, but I'd be happy to get things setup in a way that users could try things out.

My short term plan:

• Finish up some user interface changes (hopefully today/tomorrow).
• Release later this week/early next week.
• Add dask-gateway's helm chart a a subchart to the pangeo chart.

[jhamman]

closed via #104