Move kind release-blocking jobs to k8s-infra-prow-build

[spiffxp]

Greenhouse is up and running over there now (ref: kubernetes/k8s.io#842 (comment))

Just moving the master jobs for now to confirm everything looks
as expected

ref: kubernetes/k8s.io#841

/cc @BenTheElder
/wg k8s-infra

[BenTheElder]

/lgtm
/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: BenTheElder, spiffxp

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[k8s-ci-robot]

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

• key kind-release-blocking.yaml using file config/jobs/kubernetes-sigs/kind/kind-release-blocking.yaml

In response to this:

Greenhouse is up and running over there now

Just moving the master jobs for now to confirm everything looks
as expected

/cc @BenTheElder
/wg k8s-infra

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