Kops - Fix image used by some presubmit jobs

[rifelpet]

The old image has not been updated in almost a year and is still running Go 1.11:

docker run --entrypoint=/usr/local/go/bin/go gcr.io/k8s-testimages/gcloud-in-go:v20190125-cc5d6ecff3 version
go version go1.11.5 linux/amd64

We have open PRs which are not compatible with go 1.11 which is causing their presubmits to fail.
This switches those jobs to use the same kubekins image as the E2E jobs.
I see other projects using the same kubekins-e2e image for non-e2e jobs as well.

The new image has Go 1.13 as we expect:

docker run --entrypoint=/usr/local/go/bin/go gcr.io/k8s-testimages/kubekins-e2e:v20191219-72db7a6-experimental version
go version go1.13.4 linux/amd64

[johngmyers]

So "best effort" on Go 1.12 means we only CI on it in Travis? Or should we remove 1.12 from Travis?

Perhaps Go 1.12 should be an agenda item for kops office hours.

[rifelpet]

Our go.mod file and released builds (from Justin's workstation) use 1.13. I think "best effort" implies that we'll continue to test against 1.12 but if we end up needing to do something incompatible with 1.12, it will be a conscious decision and at that point we'll consider dropping our 1.12 Travis CI tests.

[justinsb]

Let's try it!

/approve
/lgtm

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: justinsb, rifelpet

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[k8s-ci-robot]

@rifelpet: Updated the job-config configmap in namespace default at cluster default using the following files:

• key kops-config.yaml using file config/jobs/kubernetes/kops/kops-config.yaml

In response to this:

The old image has not been updated in almost a year and is still running Go 1.11:

docker run --entrypoint=/usr/local/go/bin/go gcr.io/k8s-testimages/gcloud-in-go:v20190125-cc5d6ecff3 version
go version go1.11.5 linux/amd64

We have open PRs which are not compatible with go 1.11 which is causing their presubmits to fail.
This switches those jobs to use the same kubekins image as the E2E jobs.
I see other projects using the same kubekins-e2e image for non-e2e jobs as well.

The new image has Go 1.13 as we expect:

docker run --entrypoint=/usr/local/go/bin/go gcr.io/k8s-testimages/kubekins-e2e:v20191219-72db7a6-experimental version
go version go1.13.4 linux/amd64

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