DAOS-18296 rdb: Call vos_pool_create/open in ULTs

[liw]

Call vos_pool_create and vos_pool_open in new deep-stack ULTs on the xstream to avoid pmemobj_create and pmemobj_open from potentially overflowing caller stacks.

Steps for the author:

• Commit message follows the guidelines.
• Appropriate Features or Test-tag pragmas were used.
• Appropriate Functional Test Stages were run.
• At least two positive code reviews including at least one code owner from each category referenced in the PR.
• Testing is complete. If necessary, forced-landing label added and a reason added in a comment.

After all prior steps are complete:

• Gatekeeper requested (daos-gatekeeper added as a reviewer).

[github-actions]

Ticket title is 'dmg system start causes engines to crash after pool create'
Status is 'In Progress'
Labels: 'scrubbed_2.8'
https://daosio.atlassian.net/browse/DAOS-18296

[daosbuild3]

Test stage NLT on EL 8.8 completed with status UNSTABLE. https://jenkins-3.daos.hpc.amslabs.hpecorp.net/job/daos-stack/job/daos//view/change-requests/job/PR-17302/3/testReport/

[janekmi]

FYI this patch won't be necessary when this patch to PMDK will land: daos-stack/pmdk#28
The work goes full steam ahead. I would expect it to be resolved by the end of this week.

[liw]

FYI this patch won't be necessary when this patch to PMDK will land: daos-stack/pmdk#28 The work goes full steam ahead. I would expect it to be resolved by the end of this week.

@janekmi, @grom72, thanks for the pmdk work. At the daos level, we'd like to make this call change regardless, just in case.

[daosbuild3]

Test stage Functional Hardware Medium MD on SSD completed with status FAILURE. https://jenkins-3.daos.hpc.amslabs.hpecorp.net//job/daos-stack/job/daos/view/change-requests/job/PR-17302/9/execution/node/1271/log

[daosbuild3]

Test stage NLT on EL 8.8 completed with status UNSTABLE. https://jenkins-3.daos.hpc.amslabs.hpecorp.net/job/daos-stack/job/daos//view/change-requests/job/PR-17302/10/testReport/

[kccain]

looks good (other than copyright out of date already noted by linting)

[NiuYawei]

copyright is out of date.

[liw]

Errrhhh, thanks. Fixed.