Run code auto-generation inside a container instead of the host system.
Our auto-generation depends on specific versions of a multitude of tools
(like k8s code-generator, controller-gen, protoc, mockery etc). This
made it really awkward (and error-prone) to run in the host environment,
especially if/when you needed different versions of those tools for
other projects. Making it even more unwieldy, the required versions of
tools were not neatly documented anywhere (except for git commits,
perhaps).
With this patch we have a "fixed environment", as we build a special
auto-generate-builder container which has correct versions of all the
dependencies. Using the container makes auto-generation easy to run
anywhere, independent of the host system, giving reproducibility and
reliability. Also, the patch moves the auto-generation steps out from
the makefile into a separate script, making the makefile cleaner and the
script easier to maintain.
Enable transmitting the discovered "raw" features over the gRPC API.
Extend pkg/api/feature with protobuf and gRPC code. In this, utilize
go-to-protobuf from k8s code-generator for auto-generating the gRPC
interface from golang code. The tool can be Installed with:
go install k8s.io/code-generator/cmd/go-to-protobuf@v0.20.7
The auto-generated code is (re-)generated/updated with "make apigen".
