Update default image values for rally to wallaby

This change updates the default image values from ocata to
wallaby for the rally chart.

Change-Id: I66ee14dd2ba5dc12a236269f414950c7aef8107d

rally/Chart.yaml

@@ -14,7 +14,7 @@ apiVersion: v1
 appVersion: v1.0.0
 description: OpenStack-Helm rally
 name: rally
-version: 0.2.2
+version: 0.2.3
 home: https://docs.openstack.org/developer/rally
 icon: https://www.openstack.org/themes/openstack/images/project-mascots/rally/OpenStack_Project_rally_vertical.png
 sources:

rally/values.yaml

@@ -30,9 +30,9 @@ images:
     db_init: docker.io/xrally/xrally-openstack:2.0.0
     rally_db_sync: docker.io/xrally/xrally-openstack:2.0.0
     run_task: docker.io/xrally/xrally-openstack:2.0.0
-    ks_user: docker.io/openstackhelm/heat:ocata-ubuntu_xenial
-    ks_service: docker.io/openstackhelm/heat:ocata-ubuntu_xenial
-    ks_endpoints: docker.io/openstackhelm/heat:ocata-ubuntu_xenial
+    ks_user: docker.io/openstackhelm/heat:wallaby-ubuntu_focal
+    ks_service: docker.io/openstackhelm/heat:wallaby-ubuntu_focal
+    ks_endpoints: docker.io/openstackhelm/heat:wallaby-ubuntu_focal
     image_repo_sync: docker.io/docker:17.07.0
   pull_policy: "IfNotPresent"
   local_registry:

releasenotes/notes/rally.yaml

@@ -5,4 +5,5 @@ rally:
   - 0.2.0 Remove support for releases before T
   - 0.2.1 Update htk requirements repo
   - 0.2.2 Add values for backoffLimit and restartPolicy
+  - 0.2.3 Update default image values to Wallaby
 ...