Add contour to e2e addons

Signed-off-by: Jake Sanders <i@am.so-aweso.me>

devel/addon/projectcontour/install.sh

@@ -0,0 +1,54 @@
+#!/usr/bin/env bash
+
+# Copyright 2021 The cert-manager Authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Install HAProxy as a gateway-API e2e test.
+
+set -o nounset
+set -o errexit
+set -o pipefail
+
+SCRIPT_ROOT=$(dirname "${BASH_SOURCE}")
+source "${SCRIPT_ROOT}/../../lib/lib.sh"
+
+check_tool kubectl
+
+kubectl apply -f "${SCRIPT_ROOT}/contour-gateway.yaml"
+
+cat <<EOYAML | kubectl apply -f -
+---
+kind: GatewayClass
+apiVersion: gateway.networking.k8s.io/v1alpha2
+metadata:
+  name: acmesolver
+spec:
+  controllerName: projectcontour.io/projectcontour/contour
+
+---
+kind: Gateway
+apiVersion: gateway.networking.k8s.io/v1alpha2
+metadata:
+  name: acmesolver
+  namespace: projectcontour
+spec:
+  gatewayClassName: acmesolver
+  listeners:
+    - name: http
+      protocol: HTTP
+      port: 80
+      allowedRoutes:
+        namespaces:
+          from: All
+EOYAML