PoC for collecting ScyllaDB coredumps

[tnozicka]

We need to figure out how to best collect ScyllaDB core dumps. Ideally this should be multitenant and not require extra permissions.

One approach is to configure nodes and collect them centrally, which is not great and poses multitenancy challenges. Another could use setting per ScyllaClusters sysctl option kernel.core_pattern and direct the core dump into the PVC. Others remain to be investigated.

This may turn out to a be a proposal or just an input for documentation

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/lifecycle stale

[tnozicka]

/remove-lifecycle stale /triage accepted