Allow variables overrides for control plane

[fabriziopandini]

What would you like to be added (User Story)?

As a user, I would like to set overrides for variables that apply to the control plane only

Detailed Description

Cluster topology allows defining a sort of hierarchical set of variables, where there are global variables and overrides for specific objects, like MP and MD.

We should introduce a similar concept for CP too, thus allowing use cases like e.g. I set the size of my machines with a global variable, but I override it for the CP to use different machines

Anything else you would like to add?

No response

Label(s) to be applied

/kind feature
/area clusterclass
/priority important-longterm
/triage accepted
/help

[k8s-ci-robot]

@fabriziopandini:
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In response to this:

What would you like to be added (User Story)?

As a user, I would like to set overrides for variables that apply to the control plane only

Detailed Description

Cluster topology allows defining a sort of hierarchical set of variables, where there are global variables and overrides for specific objects, like MP and MD.

We should introduce a similar concept for CP too, thus allowing use cases like e.g. I set the size of my machines with a global variable, but I override it for the CP to use different machines

Anything else you would like to add?

No response

Label(s) to be applied

/kind feature
/area clusterclass
/priority important-longterm
/triage accepted
/help

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes-sigs/prow repository.

[sbueringer]

Makes sense!

/assign