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

Greenhouse is up and running over there now

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

config/jobs/kubernetes-sigs/kind/kind-release-blocking.yaml

@@ -1,5 +1,6 @@
 periodics:
 - interval: 1h
+  cluster: k8s-infra-prow-build
   name: ci-kubernetes-kind-e2e-parallel
   annotations:
     testgrid-dashboards: sig-release-master-blocking, sig-testing-kind
@@ -51,6 +52,7 @@ periodics:
           # during the tests more like 3-20m is used
           cpu: 2000m
 - interval: 1h
+  cluster: k8s-infra-prow-build
   name: ci-kubernetes-kind-ipv6-e2e-parallel
   annotations:
     testgrid-dashboards: sig-release-master-blocking, sig-testing-kind