Add restart playbook for zuul services

We can use import_playbook to first stop then start services.

Change-Id: Ifb9434ff9163ebbf48221e7d83a019a855771a67
Signed-off-by: Paul Belanger <pabelanger@redhat.com>

playbooks/zuul/restart.yaml

@@ -0,0 +1,16 @@
+# Copyright 2019 Red Hat, Inc.
+#
+# 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.
+---
+- import_playbook: stop.yaml
+- import_playbook: start.yaml