Liveness always unknown

[Andilun]

Liveness probes are configured in HelmRelease:
https://github.com/statisticsnorway/platform-dev/blame/f34599c16a067cf6e98d4264a3dc36149bdf8c39/flux/staging-bip-app/dapla/dapla-pseudo-service/dapla-pseudo-service.yaml#L64

But the liveness endpoint is not configured and will always returns UNKNOWN:

GET health/liveness from jupyter.dapla-staging.ssb.no

curl http://dapla-pseudo-service.dapla.svc.cluster.local/health/liveness
{"status":"UNKNOWN"}

Without the liveness probe k8s can't accurately determine the health of the app.