Some of the modern Kubernetes clients use clients generated from a
swagger.json

kubernetes-client/javascript uses kubernetes-client/gen which uses
OpenApiTools/openapi-generator and kubernetes/kubernetes/api/openapi-spec/swagger.json

There are open/closed/rotten/ignored issues all over the place about
making these easier to use with CRDs.

Wrongly closed issue on kubernetes-client/javascript: kubernetes-client/javascript#341
Open issue on kubernetes-client/gen: kubernetes-client/gen#121

It seems like kubernetes/kube-openapi is one of the repos working on
solving the main part of this problem, generating the Go code to make
it easy to generate a swagger.json

I found the following Argo code via the following issue:

kubernetes/kube-openapi#13

https://github.com/argoproj/argo/blob/master/hack/gen-openapi-spec/main.go
https://github.com/argoproj/argo/blob/master/pkg/apis/workflow/v1alpha1/openapi_generated.go#L14:6
https://github.com/kubernetes/kube-openapi/blob/master/cmd/openapi-gen/openapi-gen.go

So I'm working on adding similar stuff to Shipper.

gen-openapi-spec uses the generated openapi_generated.go module that is
generated via the openapi-gen command.

The following commit adds the code to generate openapi_generated.go

Signed-off-by: William Stewart <zoidbergwill@gmail.com>

Generated with:
go run ./hack/gen-openapi-spec/main.go v1alpha1 > api/openapi-spec/swagger.json

Signed-off-by: William Stewart <zoidbergwill@gmail.com>

Added these by hand, not 100% sure how to add them to generation.

Signed-off-by: William Stewart <zoidbergwill@gmail.com>

Signed-off-by: William Stewart <zoidbergwill@gmail.com>

Maybe this shouldn't go in the final PR that is merged.

Also probably blocked by other 0.9 PR updating dependencies