some unfinished and untested work over helm mirror

config/helm/scraper/test/examples/upgrade/README.md

@@ -0,0 +1,21 @@
+# Upgrade
+
+This example will deploy APM Server chart using an old chart version,
+then upgrade it.
+
+
+## Usage
+
+* Add the Elastic Helm charts repo: `helm repo add elastic https://helm.elastic.co`
+
+* Deploy [Elasticsearch Helm chart][]: `helm install elasticsearch elastic/elasticsearch`
+
+* Deploy and upgrade APM Server chart with the default values: `make install`
+
+
+## Testing
+
+You can also run [goss integration tests][] using `make test`.
+
+
+[goss integration tests]: https://github.com/elastic/helm-charts/tree/main/apm-server/examples/upgrade/test/goss.yaml