Add node e2e test CI.

Signed-off-by: Lantao Liu <lantaol@google.com>

hack/test-utils.sh

@@ -0,0 +1,53 @@
+#!/bin/bash
+
+# Copyright 2017 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.
+
+ROOT="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"/..
+. ${ROOT}/hack/versions
+
+# start_cri_containerd starts containerd and cri-containerd.
+start_cri_containerd() {
+  local report_dir=$1 
+  if [ ! -x ${ROOT}/_output/cri-containerd ]; then
+    echo "cri-containerd is not built"
+    exit 1
+  fi
+
+  # Start containerd
+  if [ ! -x "$(command -v containerd)" ]; then
+    echo "containerd is not installed, please run hack/install-deps.sh"
+    exit 1
+  fi
+  kill_cri_containerd
+  sudo containerd -l debug &> ${report_dir}/containerd.log &
+
+  # Wait for containerd to be running by using the containerd client ctr to check the version
+  # of the containerd server. Wait an increasing amount of time after each of five attempts
+  local MAX_ATTEMPTS=5
+  local attempt_num=1
+  until sudo ctr version &> /dev/null || (( attempt_num == MAX_ATTEMPTS ))
+  do
+      echo "attempt $attempt_num to connect to containerd failed! Trying again in $attempt_num seconds..."
+      sleep $(( attempt_num++ ))
+  done
+
+  # Start cri-containerd
+  sudo ${ROOT}/_output/cri-containerd --alsologtostderr --v 4 &> ${report_dir}/cri-containerd.log &
+}
+
+# kill_cri_containerd kills containerd and cri-containerd.
+kill_cri_containerd() {
+  sudo pkill containerd
+}