kubectl gs template cluster should support all CAPI providers

[marians]

User story

• As an admin, I want to create a cluster manifest via the CLI, so that I can create a cluster in a reproducible way.

Details

The kubectl gs template cluster command should provide a manifest for creation of the App and ConfigMap resources needed to provision a workload cluster.

Tasks

• CAPVCD support for kubectl gs #1554
• kubectl gs template cluster should support CAPZ

As a product owner, please convert your line item into a provider-specific issue to track in your team.

[uvegla]

FTR We have been working on adding support for creating gitops bases for CAPx cluster in kubectl gs. Currently for template only CAP[A,G,O] uses the cluster + default apps App CRs approach so we limited the scope in #1828 to support these providers only. There are some intersection / cross calling / using same data structures to avoid some double maintenance in the future, so setting up other providers - CAP[Z,V,CVD] at the moment - is more optimal when template supports the new structures as well. Created tickets to add support for these in the future for gitops add base and cross linked them.

[weatherhog]

not investing more effort into this command