App devs can't trigger creation of networking for their cluster anymore

[jbw976]

As a follow-up to #19, we need SOME way for the creation of a cluster to also get its networking created. Right now, if an app dev creates a Cluster claim, it won't have any networking (bad), and the app dev can't create the networking themselves because there's no networking claim (good).

We should update this platform-ref-gcp to follow the same pattern we see in platform-ref-aws and platform-ref-azure.

• Update with abstracted network and improve patches platform-ref-azure#3
• Move Network XRD into Cluster platform-ref-aws#65

In that pattern, the networking resources essentially moved into the Cluster XR - so by creating a Cluster claim, all of its required networking will also be created.

[jbw976]

I would love for @elohmrow to take on this effort as part of his technical ramping up :)

[ytsarev]

The desired pattern of embedding Network XR instantiation into the main Cluster Composition was implemented in #22 . Closing this one