What is missing?
hope add sts.spec.template.spec.terminationGracePeriodSeconds support

Why do we need it?
releate to　https://github.com/prometheus-operator/prometheus-operator/issues/3425 ,

if prometheus(sts) is running on node-1,when node-1 is down, the prometheus(sts) do not recreate on other ready node,
yeah,sts is design so , kubernetes/kubernetes#54368 (comment) , but when set terminationGracePeriodSeconds=0, sts can recreate on other ready node,then ,this enables fault migration

so ,I hope add terminationGracePeriodSeconds in prometheusSpec