Add setup_hosts playbook to plugins collection.

This is the same functionality as in the openstack-ansible repo
setup-hosts playbook, end eventually will be called by it.

Change-Id: Ie591aa51b16f0d6ae48f1e83e7b103ead5459312

playbooks/hook_dummy.yml

@@ -0,0 +1,3 @@
+- name: Placeholder hook
+  hosts: localhost
+  gather_facts: false

playbooks/setup_hosts.yml

@@ -0,0 +1,38 @@
+---
+# Copyright 2014, Rackspace US, 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.
+
+- name: Importing pre hook playbook
+  import_playbook: "{{ pre_setup_hosts_hook | default('openstack.osa.hook_dummy') }}"
+
+- name: Importing certificate_authority playbook
+  import_playbook: openstack.osa.certificate_authority
+
+- name: Importing certificate_ssh_authority playbook
+  import_playbook: openstack.osa.certificate_ssh_authority
+
+- name: Importing certificate_generate playbook
+  import_playbook: openstack.osa.certificate_generate
+
+- name: Importing openstack_hosts_setup playbook
+  import_playbook: openstack.osa.openstack_hosts_setup
+
+- name: Importing containers_deploy playbook
+  import_playbook: openstack.osa.containers_deploy
+
+- name: Importing security-hardening playbook
+  import_playbook: openstack.osa.security_hardening
+
+- name: Importing post hook playbook
+  import_playbook: "{{ post_setup_hosts_hook | default('openstack.osa.hook_dummy') }}"