k8s-infra-prow: add ingress and GKE managed certificate

Signed-off-by: Arnaud Meukam <[email protected]>

k8s-infra-prow.k8s.io/cluster/prow_ingress.yaml

@@ -0,0 +1,22 @@
+apiVersion: networking.k8s.io/v1beta1
+kind: Ingress
+metadata:
+  name: k8s-infra-prow-k8s-io
+  namespace: prow
+  annotations:
+    kubernetes.io/ingress.class: "gce"
+    kubernetes.io/ingress.global-static-ip-name: k8s-infra-prow
+    networking.gke.io/managed-certificates: k8s-infra-prow-k8s-io
+spec:
+  rules:
+  - host: k8s-infra-prow.k8s.io
+    http:
+      paths:
+      - path: /*
+        backend:
+          serviceName: deck
+          servicePort: 80
+      - path: /hook
+        backend:
+          serviceName: hook
+          servicePort: 8888

k8s-infra-prow.k8s.io/cluster/prow_managedcertificate.yaml

@@ -0,0 +1,8 @@
+apiVersion: networking.gke.io/v1
+kind: ManagedCertificate
+metadata:
+  name: k8s-infra-prow-k8s-io
+  namespace: prow
+spec:
+  domains:
+  - k8s-infra-prow.k8s.io