chore: Configure tinyproxy to always restart if killed.

[grugnog]

See https://github.com/terraform-google-modules/terraform-google-kubernetes-engine/issues/730#issuecomment-770431179

This uses an override rather than modifying the package owned configuration, which is cleaner and won't be affected by package upgrades.

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[bharathkkb]

/gcbrun

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This PR is stale because it has been open 60 days with no activity. Remove stale label or comment or this will be closed in 7 days

[github-actions[bot]]

This PR is stale because it has been open 60 days with no activity. Remove stale label or comment or this will be closed in 7 days