Fix generation of watcher config file

Although the refactoring of the applier got merged we have an issue
to generate the config. This pathset fix that

Change-Id: Iafce7d0136b2ad813102c3e3caeebafa215363c8
Closes-Bug: 1526851

watcher/tests/test_list_opts.py

@@ -0,0 +1,31 @@
+# -*- encoding: utf-8 -*-
+# Copyright (c) 2015 b<>com
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+# implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+from __future__ import absolute_import
+from __future__ import unicode_literals
+
+import watcher.opts as opt
+
+from watcher.tests.base import BaseTestCase
+
+
+class TestListOpts(BaseTestCase):
+    def setUp(self):
+        super(TestListOpts, self).setUp()
+
+    def test_run_list_opts(self):
+        result = opt.list_opts()
+        self.assertIsNotNone(result)