Adding further data collection to pt-k8s-debug-collector

Hello team,

The support team struggled a lot with PostgreSQL Operator issues related to the backup and restore process.
We made a sync-up with the engineering team, and we asked what logs would be relevant for them if we need to escalate the problem.
Additionally to the existing data collection we need to collect

1. Database logs (everything under $PGDATA/logs. Similar to what we would get by performing:
   kubectl exec -i cluster1-instance1-xxxx-0 -c database -- bash -c 'tar cz /pgdata/*/log' > cluster1-instance1-xxxx-0.tar

2. Output of patronictl list. Similar to what we would get by performing:
   kubectl exec cluster1-instance1-xxxx-0 -c database -i -- bash -c 'patronictl list' > patronictl_list.log

3. pgbackrest container logs

   kubectl logs cluster1-instance1-xxxx-0 -c pgbackrest > cluster1-instance1-xxxx-0_pgbackrest_container.log

4. pgbackrest execution logs
   kubectl exec -i cluster1-instance1-xxxx-0 -c pgbackrest -- bash -c 'tar cz /pgdata/pgbackrest/log' > cluster1-instance1-xxxx-0_pgbackrest_execution_logs.tar

5. pgbackrest info output
   kubectl exec cluster1-repo-host-0 -it -c pgbackrest -- bash -c 'pgbackrest info' > pgbackrest_info.out

If you need any additional info, please let us know.

Best regards,