add e2e scenario script for testing cilium connectivity

tests/e2e/scenarios/cilium-connectivity-test/run-test.sh

@@ -0,0 +1,46 @@
+#!/usr/bin/env bash
+
+# Copyright 2020 The Kubernetes 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.
+
+REPO_ROOT=$(git rev-parse --show-toplevel);
+source "${REPO_ROOT}"/tests/e2e/scenarios/lib/common.sh
+
+export KOPS_BASE_URL
+KOPS_BASE_URL="$(curl -s https://storage.googleapis.com/kops-ci/bin/latest-ci-updown-green.txt)"
+KOPS=$(kops-download-from-base)
+
+ARGS="--override=cluster.spec.networking.cilium.hubble.enabled=true --override=cluster.spec.certManager.enabled=true"
+
+if [[ $1 == "kube-proxy" ]]; then
+    ARGS="${ARGS} --override=cluster.spec.networking.cilium.enableNodePort=false --override=cluster.spec.kubeProxy.enabled=true"
+# This test requires private topology, which kubetest2 does not support.
+#elif [[ $1 == "eni"]]
+#    ARGS="${ARGS} --override=cluster.spec.cilium.ipam=eni --override=cluster.spec.cilium.disable-masquerade"
+#    ARGS="${ARGS} --topology private"
+elif [[ $1 == "node-local-dns" ]]; then
+    ARGS="${ARGS} --override=cluster.spec.kubeDNS.provider=CoreDNS --override=cluster.spec.kubeDNS.nodeLocalDNS.enabled=true"
+fi
+
+${KUBETEST2} \
+    --up \
+    --kubernetes-version="1.21.0" \
+    --kops-binary-path="${KOPS}" \
+    --create-args="--networking cilium $ARGS"
+
+kubectl port-forward -n kube-system deployment/hubble-relay 4245:4245 &
+
+wget -qO- https://github.com/cilium/cilium-cli/releases/download/v0.7/cilium-linux-amd64.tar.gz | tar xz -C "${WORKSPACE}"
+
+cilium connectivity test --all-flows