Update default image values for mariadb

This change updates the default image values in the mariadb chart
up to using Wallaby for the ones that use openstack images.

Change-Id: Id28da22932362c0400766a564b382ddbcada8c61

mariadb/Chart.yaml

@@ -15,7 +15,7 @@ apiVersion: v1
 appVersion: v10.2.31
 description: OpenStack-Helm MariaDB
 name: mariadb
-version: 0.2.18
+version: 0.2.19
 home: https://mariadb.com/kb/en/
 icon: http://badges.mariadb.org/mariadb-badge-180x60.png
 sources:

mariadb/values.yaml

@@ -25,11 +25,11 @@ images:
     error_pages: k8s.gcr.io/defaultbackend:1.4
     prometheus_create_mysql_user: docker.io/library/mariadb:10.5.9-focal
     prometheus_mysql_exporter: docker.io/prom/mysqld-exporter:v0.12.1
-    prometheus_mysql_exporter_helm_tests: docker.io/openstackhelm/heat:newton-ubuntu_xenial
+    prometheus_mysql_exporter_helm_tests: docker.io/openstackhelm/heat:wallaby-ubuntu_focal
     dep_check: quay.io/airshipit/kubernetes-entrypoint:v1.0.0
     image_repo_sync: docker.io/library/docker:17.07.0
     mariadb_backup: quay.io/airshipit/porthole-mysqlclient-utility:latest-ubuntu_bionic
-    ks_user: docker.io/openstackhelm/heat:stein-ubuntu_bionic
+    ks_user: docker.io/openstackhelm/heat:wallaby-ubuntu_focal
     scripted_test: docker.io/openstackhelm/mariadb:ubuntu_focal-20210415
   pull_policy: "IfNotPresent"
   local_registry:

releasenotes/notes/mariadb.yaml

@@ -34,4 +34,5 @@ mariadb:
   - 0.2.16 Revert naming for subchart compatibility
   - 0.2.17 Enable taint toleration for Openstack services jobs
   - 0.2.18 Updated naming for subchart compatibility
+  - 0.2.19 Update default image value to Wallaby
 ...