DAOS-14265 test: Improvements to soak tests as per Endurance test plan

[saurabhtandan]

Increase minimum ior transfer size to 32K Include minimum fio block size of 4k Increase the datamover data size so that it is moving TB of data Change oclass on reserved pool to SX in soak harassers

Test-tag: test_soak_smoke

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• [ ] Two review approvals and any prior change requests have been resolved.
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• [ ] Any tests skipped by the ticket being addressed have been run and passed in the PR.

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[github-actions[bot]]

Ticket title is 'Soak improvements: Increase minimum ior transfer size to 32K' Status is 'In Progress' Labels: '2.6.0,soak' https://daosio.atlassian.net/browse/DAOS-14265

[mjean308]

Saurabh try this test tag for commit

Skip-unit-tests: true Skip-fault-injection-test: true Test-tag: soak_smoke