update Topology-Aware Routing docs

[danwinship]

We need to update the docs for Topology-Aware Routing, especially content/en/docs/concepts/services-networking/topology-aware-routing.md. (I'm fixing a few smaller bits already...)

It's not clear to me if the right messaging is:

• "Topology-Aware Routing is deprecated in favor of Traffic Distribution"
• "Traffic Distribution, formerly known as Topology-Aware Routing ..."
• "Topology-Aware Routing is a set of features including Traffic Distribution and the deprecated topology-mode annotation ..."
• ... ?

/sig network /cc @gauravkghildiyal @robscott @thockin @aojea

[gauravkghildiyal]

Firstly, thanks for helping with the docs updates @danwinship

I have a preference towards "Topology-Aware Routing is a set of features including Traffic Distribution and the deprecated topology-mode annotation ...", with "Topology-Aware Routing" conveying a general idea of what the feature is about, and the rest is just internal details of how it's supposed to be used -- through field, or the annotation

It is also along these lines that I've tried to convey it in our 1.33 Release Highlights

[sftim]

/language en

[sftim]

I like the idea of documenting as a concept how Kubernetes lets you account for topology when routing traffic, especially to Services.

[sftim]

If there are tasks people want to achieve, eg ensuring or preferring zone-local routing, those should be separate task pages.

[sftim]

/triage accepted /priority backlog

[Antraxmin]

/assign @Antraxmin