When the pod starts, add host aliases to the /etc/hosts file

[gitlabsam]

When trino needs to access multiple clusters, the hosts for external cluster interactions need to be added to the /etc/hosts file, otherwise the IP of domain name format may not be reachable. Therefore, I added this feature to add the specified host aliases to the /etc/hosts file when the pod starts.

[cla-bot]

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[nineinchnick]

This seems to have a very specific use case. Can you add a test for this, similar to https://github.com/trinodb/charts/blob/main/charts/trino/templates/tests/test-connection.yaml, and configure it in https://github.com/trinodb/charts/blob/main/test-values.yaml?