chore: add clusterclass sample template

[salasberryfin]

/kind feature

What this PR does / why we need it:

Add ClusterClass and Topology cluster templates based on existing E2E infrastructure files. These files will be referenced in the book so users can get started with cluster classes via clusterctl generate, similar to the existing documentation on how to create a GKE cluster.

Which issue(s) this PR fixes:
Fixes #

Special notes for your reviewer:

A follow up to this PR will update the book and add references to these new templates.

TODOs:

• squashed commits
• includes documentation
• adds unit tests

Release note:

NONE

[k8s-ci-robot]

@salasberryfin: The label(s) kind/chore cannot be applied, because the repository doesn't have them.

In response to this:

/kind chore

What this PR does / why we need it:

Add ClusterClass and Topology cluster templates based on existing E2E infrastructure files. These files will be referenced in the book so users can get started with cluster classes via clusterctl generate, similar to the existing documentation on how to create a GKE cluster.

Which issue(s) this PR fixes:
Fixes #

Special notes for your reviewer:

A follow up to this PR will update the book and add references to these new templates.

TODOs:

• squashed commits
• includes documentation
• adds unit tests

Release note:

NONE

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[salasberryfin]

/kind feature

[cpanato]

should we add this in the e2e tests?

[salasberryfin]

Hi @cpanato. This should already be covered in E2E, as templates are taken from ./test/e2e/data/ https://github.com/kubernetes-sigs/cluster-api-provider-gcp/tree/main/test/e2e/data/infrastructure-gcp. Is that correct?

[cpanato]

Hi @cpanato. This should already be covered in E2E, as templates are taken from ./test/e2e/data/ https://github.com/kubernetes-sigs/cluster-api-provider-gcp/tree/main/test/e2e/data/infrastructure-gcp. Is that correct?

Actually not, that holds all configurations but we need to hook that in the tests

need to add here https://github.com/kubernetes-sigs/cluster-api-provider-gcp/blob/main/test/e2e/config/gcp-ci.yaml#L54-L75

and then add a test cases adding the flavor like https://github.com/kubernetes-sigs/cluster-api-provider-gcp/blob/main/test/e2e/e2e_test.go#L186-L208

[salasberryfin]

Thanks for clarifying! I think we can keep this as-is and I'll open a separate PR to cover this in E2E, what do you think?

[cpanato]

sgtm, thank you so much!

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: cpanato, salasberryfin

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