Add MySQL connection SSL support

When 'octavia_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: I7a43d313474e17d7e968a5a9510368e3abdf6682
Partial-Bug: 1667789

defaults/main.yml

@@ -55,9 +55,11 @@ octavia_clients_endpoint: internalURL
 
 octavia_auth_strategy: keystone
 
-## DB
+## Database info
 octavia_galera_user: octavia
 octavia_galera_database: octavia
+octavia_galera_use_ssl: "{{ galera_use_ssl | default(False) }}"
+octavia_galera_ssl_ca_cert: "{{ galera_ssl_ca_cert | default('/etc/ssl/certs/galera-ca.pem') }}"
 octavia_db_max_overflow: 20
 octavia_db_pool_size: 120
 octavia_db_pool_timeout: 30

templates/octavia.conf.j2

@@ -47,7 +47,8 @@ ssl = {{ octavia_rabbitmq_use_ssl }}
 rpc_conn_pool_size = {{ octavia_rpc_conn_pool_size }}
 
 [database]
-connection = mysql+pymysql://{{ octavia_galera_user }}:{{ octavia_container_mysql_password }}@{{ octavia_galera_address }}/{{ octavia_galera_database }}?charset=utf8
+connection = mysql+pymysql://{{ octavia_galera_user }}:{{ octavia_container_mysql_password }}@{{ octavia_galera_address }}/{{ octavia_galera_database }}?charset=utf8{% if octavia_galera_use_ssl | bool %}&ssl_ca={{ octavia_galera_ssl_ca_cert }}{% endif %}
+
 max_overflow = {{ octavia_db_max_overflow }}
 max_pool_size = {{ octavia_db_pool_size }}
 pool_timeout = {{ octavia_db_pool_timeout }}

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-octavia-ssl-nv
+    parent: openstack-ansible-functional-ubuntu-xenial
+    voting: false
+    vars:
+      tox_env: ssl

zuul.d/project.yaml

@@ -19,6 +19,7 @@
       jobs:
         - openstack-ansible-linters
         - openstack-ansible-functional-ubuntu-xenial
+        - openstack-ansible-octavia-ssl-nv
     experimental:
       jobs:
         - openstack-ansible-integrated-deploy-aio
@@ -26,3 +27,4 @@
       jobs:
         - openstack-ansible-linters
         - openstack-ansible-functional-ubuntu-xenial
+        - openstack-ansible-octavia-ssl-nv