Grafana-dev test: Use default dashboard

Previously, the grafana-dev test would create a new custom dashboard,
and test the exporting to configmap using that. However since adding
custom dashboards are not so reliable after Grafana 11 update, we change
the test to use of the default dashboards. This should improve test
reliability, and there are no difference whether we export a custom
dashboard or a default one.

Signed-off-by: Jacob Baungard Hansen <jacobbaungard@redhat.com>

tests/grafana-dev-test.sh

@@ -10,9 +10,6 @@ base_dir="$(
 cd "$base_dir"
 obs_namespace=open-cluster-management-observability
 
-# create a dashboard for test export grafana dashboard
-kubectl apply -n "$obs_namespace" -f "$base_dir"/examples/dashboards/sample_custom_dashboard/custom-sample-dashboard.yaml
-
 # test deploy grafana-dev
 cd $base_dir/tools
 ./setup-grafana-dev.sh --deploy
@@ -63,7 +60,7 @@ fi
 n=0
 until [ "$n" -ge 10 ]; do
   # test export grafana dashboard
-  ./generate-dashboard-configmap-yaml.sh "Sample Dashboard for E2E"
+  ./generate-dashboard-configmap-yaml.sh "ACM - Clusters Overview"
   if [ $? -eq 0 ]; then
     break
   fi