tools: add script to pull virtiofsd

Right now this is very much x86_64 specific, but I'd like to count on
the maintainers of the other architectures to expand it.

Also, the name as it's now may be misleading, as we're actually only
pulling the binary that's statically built using `musl` and released as
part of virtiofsd official releases.  But we'll need to build it for the
other architectures, thus I'm following the naming of the scripts used
by the other components.

Signed-off-by: Fabiano Fidêncio <fabiano.fidencio@intel.com>

tools/packaging/static-build/virtiofsd/build-static-virtiofsd.sh

@@ -0,0 +1,43 @@
+#!/usr/bin/env bash
+#
+# Copyright (c) 2022 Intel Corporation
+#
+# SPDX-License-Identifier: Apache-2.0
+
+set -o errexit
+set -o nounset
+set -o pipefail
+
+ARCH=$(uname -m)
+
+script_dir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+
+source "${script_dir}/../../scripts/lib.sh"
+
+virtiofsd_version="${virtiofsd_version:-}"
+
+[ -n "$virtiofsd_version" ] || virtiofsd_version=$(get_from_kata_deps "externals.virtiofsd.version")
+[ -n "$virtiofsd_version" ] || die "failed to get virtiofsd version"
+
+if [ "${ARCH}" != "x86_64" ]; then
+	info "Only x86_64 binaries are distributed as part of the virtiofsd releases" && exit 1
+fi
+
+pull_virtiofsd_released_binary() {
+    info "Download virtiofsd version: ${virtiofsd_version}"
+    virtiofsd_zip=$(get_from_kata_deps "externals.virtiofsd.meta.binary")
+    [ -n "${virtiofsd_zip}" ] || die "failed to get virtiofsd binary URL"
+
+    mkdir -p virtiofsd
+
+    pushd virtiofsd
+    curl --fail -L ${virtiofsd_zip} -o virtiofsd.zip || return 1
+    unzip virtiofsd.zip
+    mv -f target/x86_64-unknown-linux-musl/release/virtiofsd virtiofsd
+    chmod +x virtiofsd
+    rm -rf target
+    rm virtiofsd.zip
+    popd
+}
+
+pull_virtiofsd_released_binary