move to Kubernetes v1.18.2 API

[rojkov]

closes #317

[mythi]

perhaps we should take #364 in this PR too?

[mythi]

can we document the steps to get 453ad1c easily done in DEVEL.md?

[bart0sh]

/LGTM & agree with @mythi requests

[rojkov]

can we document the steps to get 453ad1c easily done in DEVEL.md?

Sure, I'll update DEVEL.md FWIW

Usually I follow this post https://www.openshift.com/blog/kubernetes-deep-dive-code-generation-customresources. Though it's assumed dep is used instead of go mod. The latter makes the steps look like black magic:

1. bump up the deps,
2. copy the repo to $GOPATH/srd/github.com/intel/...,
3. put the boilerplate to the place k8s's codegen script expects it (no way to specify it as an option),
4. run the script
5. copy the generate code back to the original repository
6. fix compilation issues.

Probably there's a better way.

[rojkov]

perhaps we should take #364 in this PR too?

I tried that, but it turned out v1beta1 and v1 have substantial differences. Here's an example for the two versions
https://kubernetes.io/docs/tasks/access-kubernetes-api/custom-resources/custom-resource-definitions/#create-a-customresourcedefinition
E2E tests fail if to change the version only. I'd rather fix the issue in a followup PR.

[mythi]

@rojkov OK, let's work on #364 separately

[mythi]

LGTM but please squash commits

[rojkov]

Oops, I didn't notice github automatically requested your reviews. Now it's ready for review.

[bart0sh]

@mythi can you merge?

[mythi]

the CI returns an error. perhaps retrigger the build to make sure it's OK?

[rojkov]

the CI returns an error. perhaps retrigger the build to make sure it's OK?

It seems I don't have permissions to restart jenkins pipelines.

[mythi]

It seems I don't have permissions to restart jenkins pipelines.

I usually just force push with a new commit id.

[bart0sh]

@mythi now it seems to be ready for merging.