Add CentOS deployment support

Add the necessary vars file for CentOS support, and adjust the role
to ensure that the variables are picked up and the role is tested on
CentOS.

Change-Id: I2d99c57c5e00c9805aaeac0e7e2f173ff3b69837
Closes-Bug: 1755253

tasks/main.yml

@@ -17,7 +17,10 @@
   include_vars: "{{ item }}"
   with_first_found:
     - "{{ ansible_distribution | lower }}-{{ ansible_distribution_version | lower }}.yml"
+    - "{{ ansible_distribution | lower }}-{{ ansible_distribution_major_version | lower }}.yml"
+    - "{{ ansible_os_family | lower }}-{{ ansible_distribution_major_version | lower }}.yml"
     - "{{ ansible_distribution | lower }}.yml"
+    - "{{ ansible_os_family | lower }}-{{ ansible_distribution_version.split('.')[0] }}.yml"
     - "{{ ansible_os_family | lower }}.yml"
   tags:
     - always

vars/redhat-7.yml

@@ -0,0 +1,24 @@
+---
+# Copyright 2016, Comcast Corporation
+#
+# 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.
+
+rally_distro_packages:
+  - openssl-devel
+  - libffi-devel
+  - python-devel
+  - libxml2-devel
+  - libxslt-devel
+  - postgresql-libs
+  - git
+  - wget

zuul.d/project.yaml

@@ -17,6 +17,7 @@
       jobs:
         - openstack-ansible-linters
         - openstack-ansible-functional-ubuntu-xenial
+        - openstack-ansible-functional-centos-7
     experimental:
       jobs:
         - openstack-ansible-integrated-deploy-aio
@@ -24,3 +25,4 @@
       jobs:
         - openstack-ansible-linters
         - openstack-ansible-functional-ubuntu-xenial
+        - openstack-ansible-functional-centos-7