Hmm, I don't know enough to give you a confident answer yet. The provided extracts do not contain specific information on how to override the Ory Keto Helm chart configuration to create an initial relationship tuple before the Kubernetes deployment. However, you can create relationships using the Ory CLI as shown in the extracts. Here is an example:

bash keto relation-tuple parse alice_policies --format json | \    keto relation-tuple create - >/dev/null \    && echo "Successfully created tuple" \    || echo "Encountered error"

For more detailed information, you may want to refer to the [Ory documentation](https://www.ory.sh/docs).