Review the worker_pools validation in base OCP #849
Description
The validation here is not future proofed. It broke when 4.19 became the default version because you could no longer pass null for ocp_version since the data lookup detected 4.19 and our validation didn't allow it.
We pass null in many examples and tests to use the current default, but this time around 4.19 became the default before our module supported it and hence many example and tests broke.
Can we update the validation so its future proofed, or else remove it all together?