convert integration suite to spdx tags

src/tests/integration/suite

 #!/usr/bin/env ruby
-#
-# Copyright (C) 2017 Harald Sitter <sitter@kde.org>
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License as
-# published by the Free Software Foundation; either version 2 of
-# the License or (at your option) version 3 or any later version
-# accepted by the membership of KDE e.V. (or its successor approved
-# by the membership of KDE e.V.), which shall act as a proxy
-# defined in Section 14 of version 3 of the license.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+# SPDX-License-Identifier: GPL-2.0-only OR GPL-3.0-only OR LicenseRef-KDE-Accepted-GPL
+# SPDX-FileCopyrightText: 2017 Harald Sitter <sitter@kde.org>
+
 
 require 'fileutils'
 require 'optparse'