Remove SERVICE_NAMES

The rest of services listed in the SERVICE_NAMES got
a class implementation under config_tempest/services
directory in order to remove the hardcoded list of
services - SERVICE_NAMES.

Story: 2002787
Task: 29693

Change-Id: Ibc58236b581551f64dfaf21fb443ed8c1cc1282b

config_tempest/services/messaging.py

@@ -0,0 +1,27 @@
+# Copyright 2019 Red Hat, Inc.
+# All Rights Reserved.
+#
+# 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 config_tempest.services.base import Service
+
+
+class MessagingService(Service):
+
+    @staticmethod
+    def get_service_name():
+        return ['zaqar']
+
+    @staticmethod
+    def get_codename():
+        return 'zaqar'