Fix issue with system installed xtrabackup

The change adds a task to ensure that the system provided
xtrabackup package is removed before installing the downloaded
version using the deb. This is required to ensure that there
are no version conflicts when installing the package.

The change also corrects the version of the galera server repo
in the defaults directory. While the repo correct version of
mariadb is being installed the name of the assumed repo is wrong.

Closes-Bug: #1513459

Change-Id: I63cb546cf5a4386320f01ed6f2120dd7c8341335
Signed-off-by: Kevin Carter <kevin.carter@rackspace.com>

playbooks/roles/galera_client/tasks/galera_client_install.yml

@@ -36,6 +36,23 @@
   tags:
     - galera-client-apt-packages
 
+# TODO(cloudnull) -- Remove this after the Mitaka release
+#  This task simply removes the system version of
+#  percona-xtrabackup and xtrabackup if found the
+#  purpose is to ensure that "if" the system version
+#  of the binary is installed its first removed in
+#  favor of the actual upstream package being used in
+#  the next task.
+- name: UnInstall system xtrabackup packages
+  apt:
+    pkg: "{{ item }}"
+    state: absent
+  with_items:
+    - percona-xtrabackup
+    - xtrabackup
+  tags:
+    - galera-client-apt-packages
+
 - name: Install galera package
   apt:
     deb: "{{ galera_client_package_path }}"

playbooks/roles/galera_server/defaults/main.yml

@@ -77,7 +77,7 @@ galera_gpg_keys:
     hash_id: '0x1c4cbdcdcd2efd2a'
 
 # Repositories
-galera_apt_repo_url: "https://mirror.rackspace.com/mariadb/repo/5.5/ubuntu"
+galera_apt_repo_url: "https://mirror.rackspace.com/mariadb/repo/10.0/ubuntu"
 galera_apt_repo:
   repo: "deb {{ galera_apt_repo_url }} {{ ansible_distribution_release }} main"
   state: "present"

playbooks/roles/galera_server/tasks/galera_install.yml

@@ -47,12 +47,29 @@
   tags:
     - galera-apt-packages
 
+# TODO(cloudnull) -- Remove this after the Mitaka release
+#  This task simply removes the system version of
+#  percona-xtrabackup and xtrabackup if found the
+#  purpose is to ensure that "if" the system version
+#  of the binary is installed its first removed in
+#  favor of the actual upstream package being used in
+#  the next task.
+- name: UnInstall system xtrabackup packages
+  apt:
+    pkg: "{{ item }}"
+    state: absent
+  with_items:
+    - percona-xtrabackup
+    - xtrabackup
+  tags:
+    - galera-apt-packages
+
 - name: Install galera package
   apt:
     deb: "{{ galera_package_path }}"
     force: yes
   tags:
-    - galera-client-apt-packages
+    - galera-apt-packages
 
 - name: Install pip packages
   pip: