Update grafana helm test

Adds setting XDG_CONFIG_HOME and XDG_CACHE_HOME to
a writable path.

Change-Id: Ieb2a6ca587ecefe24d04392970c415409c8f5e1b

grafana/Chart.yaml

@@ -15,7 +15,7 @@ apiVersion: v1
 appVersion: v9.2.10
 description: OpenStack-Helm Grafana
 name: grafana
-version: 0.1.29
+version: 0.1.30
 home: https://grafana.com/
 sources:
   - https://github.com/grafana/grafana

grafana/templates/pod-helm-tests.yaml

@@ -59,6 +59,10 @@ spec:
           value: {{ tuple "grafana" "internal" "grafana" . | include "helm-toolkit.endpoints.keystone_endpoint_uri_lookup" }}
         - name: CHROME_CONFIG_HOME
           value: /tmp/google-chrome
+        - name: XDG_CONFIG_HOME
+          value: /tmp/google-chrome
+        - name: XDG_CACHE_HOME
+          value: /tmp/google-chrome
       volumeMounts:
         - name: pod-tmp
           mountPath: /tmp

releasenotes/notes/grafana.yaml

@@ -30,4 +30,5 @@ grafana:
   - 0.1.27 Update default images tags. Add 2024.1-ubuntu_jammy overrides.
   - 0.1.28 Upgrade osh-selenium image to ubuntu_jammy
   - 0.1.29 Add 2024.2 overrides
+  - 0.1.30 Update chart helm test environment variables
 ...