Teleport Chart 업데이트

helm/old/teleport-cluster/tests/README.md

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+## Unit tests for Helm charts
+
+Helm chart unit tests run here using the [helm-unittest](https://github.com/quintush/helm-unittest/) Helm plugin.
+
+*Note: there are multiple forks for the helm-unittest plugin.
+They are not compatible and don't provide the same featureset (e.g. including templates from sub-directories).
+Our tests rely on features and bugfixes that are only available on the quintush fork
+(which seems to be the most maintained at the time of writing)*
+
+If you get a snapshot error during your testing, you should verify that your changes intended to alter the output, then run
+this command from the root of your Teleport checkout to update the snapshots:
+
+```bash
+make -C build.assets test-helm-update-snapshots
+```
+
+After this, re-run the tests to make sure everything is fine:
+
+```bash
+make -C build.assets test-helm
+```
+
+Commit the updated snapshots along with your changes.