Use the apt_package_pinning role

Add a dependency on the apt_package_pinning role and use it, instead of a
template within this role, to pin the MariaDB repo.

Change-Id: I26111d7191db793b9cddca29c681399040ab6011

defaults/main.yml

@@ -33,6 +33,8 @@ galera_client_drop_config_file: "{{ inventory_hostname in groups['galera_all'] o
 galera_client_apt_repo_url: "https://mirror.rackspace.com/mariadb/repo/10.0/ubuntu"
 galera_client_apt_repo: "deb {{ galera_client_apt_repo_url }} {{ ansible_distribution_release }} main"
 
+galera_apt_pinned_packages: [{ package: "*", release: MariaDB, priority: "1001" }]
+
 galera_client_pip_packages:
   - MySQL-python
   - python-memcached

meta/main.yml

@@ -30,4 +30,9 @@ galaxy_info:
     - development
     - openstack
 dependencies:
+  - role: apt_package_pinning
+    apt_pinned_packages: "{{ galera_apt_pinned_packages }}"
+    apt_package_pinning_file_name: "galera_client_pin.pref"
+    when:
+      - ansible_pkg_mgr == 'apt'
   - pip_install

releasenotes/notes/apt-package-pinning-dependency-6e2e94d829508859.yaml

@@ -0,0 +1,4 @@
+---
+upgrade:
+  - The Galera client role now has a dependency on the
+    apt package pinning role.

tasks/galera_client_pre_install.yml

@@ -49,16 +49,6 @@
   tags:
     - galera-client-apt-keys
 
-- name: Drop galera repo pin
-  template:
-    src: "galera_client_pin.pref.j2"
-    dest: "/etc/apt/preferences.d/galera_client_pin.pref"
-    owner: "root"
-    group: "root"
-    mode: "0644"
-  tags:
-    - galera-client-repo-pin
-
 - name: Add galera repo(s)
   apt_repository:
     repo: "{{ galera_client_apt_repo }}"

templates/galera_client_pin.pref.j2

@@ -1,5 +0,0 @@
-# {{ ansible_managed }}
-
-Package: *
-Pin: release o=MariaDB
-Pin-Priority: 1001

tests/ansible-role-requirements.yml

@@ -1,3 +1,7 @@
+- name: apt_package_pinning
+  src: https://git.openstack.org/openstack/openstack-ansible-apt_package_pinning
+  scm: git
+  version: master
 - name: pip_install
   src: https://git.openstack.org/openstack/openstack-ansible-pip_install
   scm: git