Check Controller-gen Version

[kensipe]

Previously there was a check to see if controller-gen was missing, then it installed the version associated with controller tools. Now it actually checks to see if this is the correct version otherwise gets the correct version.
I looked at doing the same for go-bindata but it's version output is challenging and likely needs awk. This makes controller-gen much better which is the more likely change.

Signed-off-by: Ken Sipe kensipe@gmail.com

[porridge]

A separate question is whether we should maybe install tools we need into a private $GOBIN to prevent thrashing back-and-forth if a different project happens to require another version... 🤔
But this is great!

[zen-dog]

what @porridge said, otherwise LGTM.