test: add tests for NOTIFYACCESS override through sd_notify

test/TEST-80-NOTIFYACCESS/Makefile

@@ -0,0 +1 @@
+../TEST-01-BASIC/Makefile

test/TEST-80-NOTIFYACCESS/test.sh

@@ -0,0 +1,11 @@
+#!/usr/bin/env bash
+# SPDX-License-Identifier: LGPL-2.1-or-later
+set -e
+
+TEST_DESCRIPTION="test NotifyAccess through sd-notify"
+TEST_NO_QEMU=1
+
+# shellcheck source=test/test-functions
+. "${TEST_BASE_DIR:?}/test-functions"
+
+do_test "$@"