[ticket/16538] Add MySQL 8 tests

PHPBB3-16538

travis/setup-mysql8.sh

@@ -0,0 +1,27 @@
+#!/bin/bash
+#
+# This file is part of the phpBB Forum Software package.
+#
+# @copyright (c) phpBB Limited <https://www.phpbb.com>
+# @license GNU General Public License, version 2 (GPL-2.0)
+#
+# For full copyright and license information, please see
+# the docs/CREDITS.txt file.
+#
+set -e
+set -x
+
+MYSQL8=$1
+
+if [ "$MYSQL8" != '1' ]
+then
+	exit 0
+fi
+
+wget https://repo.mysql.com//mysql-apt-config_0.8.15-1_all.deb
+sudo dpkg -i mysql-apt-config_0.8.15-1_all.deb
+sudo apt-get update -q
+sudo apt-get install -q -y --allow-unauthenticated -o Dpkg::Options::=--force-confnew mysql-server
+sudo systemctl restart mysql
+sudo mysql_upgrade
+mysql --version