SUSE: Use MariaDB package from the OBS repository

Use the Open Build Service server:database repository to get the
MariaDB package which contains proper galera support for openSUSE
Leap. This also renames the vars/suse.yml file to suse-42 in order
to support just the openSUSE Leap distributions which are more stable
than Tumbleweed.

Change-Id: I77fbc7447ac3908b904b0313b11dc1d5f82b5376

tasks/galera_client_install_zypper.yml

@@ -13,6 +13,29 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+# NOTE(hwoarang): zypper_repository/auto_import_keys added in 2.2
+# so we need to manually refresh the repository and import the keys
+# in order to work with older ansible versions.
+- name: Add galera client zypper repository
+  zypper_repository:
+      refresh: yes
+      name: "{{ item.name }}"
+      repo: "{{ item.uri }}"
+  register: zypper_repository_added
+  with_items: "{{ galera_client_zypper_repo }}"
+  tags:
+    - galera-repos
+
+# NOTE(hwoarang): We need to run this right after we add the repos and
+# before we install any packages so it can't be a handler unless we
+# move everything to pre_tasks
+- name: Refresh galera client zypper repository
+  command: zypper --gpg-auto-import-keys ref
+  when: zypper_repository_added.changed
+  tags:
+    - skip_ansible_lint
+    - galera-repos
+
 - name: Install galera zypper packages
   zypper:
     name: "{{ item }}"

vars/suse-42.yml

@@ -13,6 +13,11 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+_galera_client_repo_url: "http://download.opensuse.org/repositories/server:/database/openSUSE_Leap_{{ ansible_distribution_version }}"
+galera_client_zypper_repo:
+  - name: "OBS:server_database"
+    uri: "{{ galera_client_repo_url }}"
+
 galera_client_distro_packages:
   - libbz2-devel
   - gcc