feat: add lint/e2e tests support (#126)

Signed-off-by: bitliu <bitliu@tencent.com>

tools/hack/kind-load-image.sh

@@ -0,0 +1,56 @@
+# Copyright (c) 2022 Alibaba Group Holding Ltd.
+
+# 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.
+
+#!/usr/bin/env bash
+
+set -o errexit
+set -o nounset
+set -o pipefail
+
+readonly KIND=${KIND:-tools/bin/kind}
+readonly CLUSTER_NAME=${CLUSTER_NAME:-"higress"}
+
+# Docker variables
+readonly IMAGE="$1"
+readonly TAG="$2"
+
+# Wrap sed to deal with GNU and BSD sed flags.
+run::sed() {
+  if sed --version </dev/null 2>&1 | grep -q GNU; then
+    # GNU sed
+    sed -i "$@"
+  else
+    # assume BSD sed
+    sed -i '' "$@"
+  fi
+}
+
+kind::cluster::exists() {
+    ${KIND} get clusters | grep -q "$1"
+}
+
+kind::cluster::load() {
+    ${KIND} load docker-image \
+        --name "${CLUSTER_NAME}" \
+        "$@"
+}
+
+if ! kind::cluster::exists "$CLUSTER_NAME" ; then
+    echo "cluster $CLUSTER_NAME does not exist"
+    exit 2
+fi
+
+# Push the Higress image to the kind cluster.
+echo "Loading image ${IMAGE}:${TAG} to kind cluster ${CLUSTER_NAME}..."
+kind::cluster::load "${IMAGE}:${TAG}"