Add MySQL connection SSL support

When 'designate_galera_use_ssl' is True, use an encrypted connection to
the database using either a self-signed or user-provided CA certificate.

A new non-voting test has been added to verify that the role remains
functional when enabling SSL features.

Change-Id: I0d8e3b685faa8d394fd56f8fbfd9b492d2c2cb60
Partial-Bug: 1667789

defaults/main.yml

@@ -57,10 +57,12 @@ designate_system_shell: /bin/false
 designate_system_comment: designate system user
 designate_system_user_home: "/var/lib/{{ designate_system_user_name }}"
 
-## DB info
+## Database info
 designate_galera_address: 127.0.0.1
 designate_galera_user: designate
 designate_galera_database: designate
+designate_galera_use_ssl: "{{ galera_use_ssl | default(False) }}"
+designate_galera_ssl_ca_cert: "{{ galera_ssl_ca_cert | default('/etc/ssl/certs/galera-ca.pem') }}"
 
 ## RabbitMQ info
 designate_rabbitmq_userid: designate

templates/designate.conf.j2

@@ -388,7 +388,8 @@ endpoint_type = internalURL
 # SQLAlchemy Storage
 #-----------------------
 [storage:sqlalchemy]
-connection = mysql+pymysql://{{ designate_galera_user }}:{{ designate_galera_password }}@{{ designate_galera_address }}/designate?charset=utf8
+connection = mysql+pymysql://{{ designate_galera_user }}:{{ designate_galera_password }}@{{ designate_galera_address }}/designate?charset=utf8{% if designate_galera_use_ssl | bool %}&ssl_ca={{ designate_galera_ssl_ca_cert }}{% endif %}
+
 #connection_debug = 0
 #connection_trace = False
 #sqlite_synchronous = True

tox.ini

@@ -103,6 +103,17 @@ commands =
     bash -c "{toxinidir}/tests/common/test-ansible-functional.sh"
 
 
+[testenv:ssl]
+deps =
+    {[testenv:ansible]deps}
+setenv =
+    {[testenv]setenv}
+    ANSIBLE_PARAMETERS=-vvv -e galera_use_ssl=True
+commands =
+    bash -c "{toxinidir}/tests/tests-repo-clone.sh"
+    bash -c "{toxinidir}/tests/common/test-ansible-functional.sh"
+
+
 [testenv:linters]
 deps =
     {[testenv:ansible]deps}

zuul.d/jobs.yaml

@@ -0,0 +1,21 @@
+---
+# Copyright 2017, 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.
+
+- job:
+    name: openstack-ansible-designate-ssl-nv
+    parent: openstack-ansible-functional-ubuntu-xenial
+    voting: false
+    vars:
+      tox_env: ssl

zuul.d/project.yaml

@@ -21,6 +21,7 @@
         - openstack-ansible-functional-centos-7
         - openstack-ansible-functional-opensuse-423
         - openstack-ansible-functional-ubuntu-xenial
+        - openstack-ansible-designate-ssl-nv
     experimental:
       jobs:
         - openstack-ansible-integrated-deploy-aio
@@ -30,3 +31,4 @@
         - openstack-ansible-functional-centos-7
         - openstack-ansible-functional-opensuse-423
         - openstack-ansible-functional-ubuntu-xenial
+        - openstack-ansible-designate-ssl-nv