ci: Add script to install go

This script allow to install the golang version
defined in Clear Containers versions file.

It also takes as argument the version to be installed.

E.g.

- Install go 1.10
./install_go.sh 1.10

- Install go using versions file from project.
./install_go.sh -p

Fixes: clearcontainers#966

Signed-off-by: Jose Carlos Venegas Munoz <[email protected]>

.ci/install_go.sh

@@ -0,0 +1,94 @@
+#!/bin/bash
+#
+# Copyright (c) 2018 Intel Corporation
+#
+# 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.
+
+set -o errexit
+set -o nounset
+set -o pipefail
+
+tmp_dir=$(mktemp -d -t install-go-tmp.XXXXXXXXXX)
+script_dir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+script_name="$(basename "${BASH_SOURCE[0]}")"
+USE_VERSIONS_FILE=""
+PROJECT="Clear Containers"
+
+finish() {
+	rm -rf "$tmp_dir"
+}
+
+die() {
+	echo >&2 -e "\e[1mERROR\e[0m: $*"
+	exit 1
+}
+
+info() {
+	echo -e "\e[1mINFO\e[0m: $*"
+}
+
+usage(){
+	exit_code="$1"
+	cat <<EOT
+Usage:
+
+${script_name} [options] <args>
+
+Args:
+<go-version> : Install a specific go version.
+
+Example:
+${script_name} 1.10
+
+
+Options
+-p : Install go defined in ${PROJECT} versions file.
+-h : Show this help
+
+EOT
+exit "$exit_code"
+}
+
+
+trap finish EXIT
+
+pushd "${tmp_dir}"
+
+while getopts hp opt
+do
+	case $opt in
+		h)	usage 0 ;;
+		p)	USE_VERSIONS_FILE="true"
+	esac
+done
+
+
+go_version="${1:-""}"
+if [ -z "$go_version" ];then
+	usage 0
+elif [ -n "${USE_VERSIONS_FILE}" ] ;then
+	source "${script_dir}/lib.sh"
+	get_cc_versions
+fi
+
+
+
+info "Download go version ${go_version}"
+curl -OL https://storage.googleapis.com/golang/go${go_version}.linux-amd64.tar.gz
+info "Remove old go installation"
+sudo rm -r /usr/local/go/
+info "Install go"
+sudo tar -C /usr/local -xzf go${go_version}.linux-amd64.tar.gz
+popd
+
+