[K8SPSMDB-927] Pass termnationGracePeriodSeconds to RS containers

[spron-in]

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Tell us about the feature

Following the forum thread: [https://forums.percona.com/t/how-to-set-terminationgraceperiodseconds-for-statefulset/18894/5]

 

We need to allow users to pass terminationGracePeriodSeconds (https://kubernetes.io/docs/concepts/containers/container-lifecycle-hooks/) to Replica Set containers.

This can help to cleanly shutdown the cluster in case of big data sets.

Link to JIRA