enhance: add opensuse leap 15 vagrant (#3329)

test/ansible/vagrant/opensuse-leap-15/Vagrantfile

@@ -0,0 +1,10 @@
+# frozen_string_literal: true
+
+Vagrant.configure('2') do |config|
+  config.vm.box = "opensuse/Leap-15.6.x86_64"
+  config.vm.provision "shell", inline: <<-SHELL
+  SHELL
+end
+
+common = '../common'
+load common if File.exist?(common)

test/ansible/vagrant/opensuse-leap-15/skip

@@ -0,0 +1,9 @@
+#!/bin/sh
+
+die() {
+    echo "$@" >&2
+    exit 1
+}
+
+[ "${DB_BACKEND}" = "mysql" ] && die "mysql role does not support this distribution"
+exit 0