MariaDB: Update to 10.2.13; patching wsrep_sst_xtrabackup-v2

Recent versions of MariaDB (10.1.31, 10.2.13) have a regression that
breaks clustering.  See https://github.com/MariaDB/server/pull/457 and
4e6dab94d0
for an in depth explanation.

We need 10.2.13+ for Barbican to function correctly (see bug #1734329)
but we also need the fix above to support MariaDB clustering.

This work-around can be removed later on when MariaDB 10.2.x releases
contain the needed script fix.

Thanks to Sam Yample <sam@yaple.net> for helping track this down.

Change-Id: Ifd09d7effe7d382074ca9e6678df36bdd4bce0af

mariadb/templates/bin/_start.sh.tpl

@@ -17,6 +17,12 @@ limitations under the License.
 
 set -xe
 
+# MariaDB 10.2.13 has a regression which breaks clustering, patch
+# around this for now
+if /usr/sbin/mysqld --version | grep --silent 10.2.13 ; then
+    sed -i 's^LSOF_OUT=.*^LSOF_OUT=$(lsof -sTCP:LISTEN -i TCP:${PORT} -a -c nc -c socat -F c 2> /dev/null || :)^' /usr/bin/wsrep_sst_xtrabackup-v2
+fi
+
 # Bootstrap database
 CLUSTER_INIT_ARGS=""
 CLUSTER_CONFIG_PATH=/etc/mysql/conf.d/10-cluster-config.cnf

mariadb/values.yaml

@@ -14,8 +14,11 @@
 
 images:
   tags:
-    mariadb: docker.io/mariadb:10.1.23
-    prometheus_create_mysql_user: docker.io/mariadb:10.1.23
+    # NOTE: if you update from 10.2.13 please look at
+    # https://review.openstack.org/#/q/Ifd09d7effe7d382074ca9e6678df36bdd4bce0af
+    # and check whether it's still needed
+    mariadb: docker.io/mariadb:10.2.13
+    prometheus_create_mysql_user: docker.io/mariadb:10.2.13
     prometheus_mysql_exporter: docker.io/prom/mysqld-exporter:v0.10.0
     prometheus_mysql_exporter_helm_tests: docker.io/openstackhelm/heat:newton
     dep_check: quay.io/stackanetes/kubernetes-entrypoint:v0.3.0