DAOS-15774 test: fix nvme/enospace.py container destroy

[daltonbohning]

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

Track containers created with start_ior_load and delete them explicitly.

Required-githooks: true

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[github-actions]

Ticket title is 'security/pool_acl.py, pool_groups.py test fails due container destroy failure during the teardown state.'
Status is 'In Progress'
Labels: 'ci_impact,weekly_test'
https://daosio.atlassian.net/browse/DAOS-15774

[daosbuild1]

Test stage Functional Hardware Medium completed with status FAILURE. https://build.hpdd.intel.com//job/daos-stack/job/daos/view/change-requests/job/PR-14285/2/execution/node/904/log

[daosbuild1]

Test stage Functional Hardware Medium completed with status FAILURE. https://build.hpdd.intel.com//job/daos-stack/job/daos/view/change-requests/job/PR-14285/3/execution/node/903/log

[daltonbohning]

Test passed with skipping register_cleanup:
https://build.hpdd.intel.com/job/daos-stack/job/daos/job/PR-14285/4/testReport/

[daltonbohning]

Modified test passed, and arbitrarily IorSmall for shared utility verification:
https://build.hpdd.intel.com/job/daos-stack/job/daos/job/PR-14285/8/testReport/