Create filestore promotion for kubebuilder

artifacts/filestores/k8s-staging-kubebuilder/filepromoter-manifest.yaml

@@ -0,0 +1,6 @@
+# google group for gcr.io/k8s-staging-kubebuilder is k8s-infra-staging-kubebuilder@kubernetes.io
+filestores:
+- base: gs://k8s-staging-kubebuilder/releases/
+  src: true
+- base: gs://k8s-artifacts-prod/binaries/kubebuilder/
+  service-account: k8s-infra-promoter@k8s-artifacts-prod.iam.gserviceaccount.com

artifacts/manifests/k8s-staging-kubebuilder/OWNERS

@@ -0,0 +1,9 @@
+# See the OWNERS docs at https://go.k8s.io/owners
+# These OWNERS files should stay in sync:
+# https://github.com/kubernetes-sigs/kubebuilder/blob/master/OWNERS
+
+approvers:
+  - pwittrock
+  - camilamacedo86
+  - jmrodri
+  - varshaprasad96