kata-deploy: Add script to merge kata tarballs.

After each asset is build it is needed to merge them all into one single
tarball.

Signed-off-by: Carlos Venegas <jos.c.venegas.munoz@intel.com>

tools/packaging/kata-deploy/local-build/kata-deploy-merge-builds.sh

@@ -0,0 +1,28 @@
+#!/bin/bash
+# Copyright (c) 2021 Intel Corporation
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+
+set -o errexit
+set -o nounset
+set -o pipefail
+set -o errtrace
+
+kata_build_dir=${1:-build}
+tar_path="${PWD}/kata-static.tar.xz"
+
+pushd "${kata_build_dir}"
+tarball_content_dir="${PWD}/kata-tarball-content"
+rm -rf "${tarball_content_dir}"
+mkdir "${tarball_content_dir}"
+
+for c in kata-static-*.tar.xz
+do
+    echo "untarring tarball "${c}" into ${tarball_content_dir}"
+    tar -xvf "${c}" -C "${tarball_content_dir}"
+done
+
+echo "create ${tar_path}"
+(cd "${tarball_content_dir}"; tar cvfJ "${tar_path}" .)
+popd