Ability to provide API version as resource-specific configuration

[muvaf]

Is your feature request related to a problem?

Currently, you can give version input, i.e. v1alpha1, as a flag to the CLI but that means all members of that API group get to use the same version. However, there are cases where only a few resources in the given group are meant to be bumped to v1beta1 for example.

Describe the solution you'd like

A new configuration field in ResourceConfig would give enough level of granularity for this configuration.

[muvaf]

If this sounds good to you all, I can dive into the code to see how we can implement it for both ACK and Crossplane. cc @jaypipes and friends

[a-hilaly]

Sounds great @muvaf, i believe this will also have an impact on aws-controllers-k8s/code-generator#122. We will have to generate webhooks for specific resource rather than full api versions

[muvaf]

Fixed in aws-controllers-k8s/code-generator#266