DAOS-18569 test: Fix daos_test suite for UCX.

[jgmoore-or]

Skip-build-leap15-icc: true
Skip-build-el8-gcc: true
Skip-func-test-vm: true
Skip-unit-tests: true
Skip-nlt: true
Test-provider: ucx+dc_x
Skip-func-hw-test-medium-ucx-provider: false
Skip-func-hw-test-medium-verbs-provider: true
Allow-unstable-test: true

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 '24-./daos_test/suite.py:DaosCoreTest.test_daos_rebuild_ec test failed pool reintegrate timeout'
Status is 'In Progress'
Labels: 'daily_test,master,test_2.8'
https://daosio.atlassian.net/browse/DAOS-18569

[daosbuild3]

Test stage Test RPMs on EL 8.6 completed with status FAILURE. https://jenkins-3.daos.hpc.amslabs.hpecorp.net/job/daos-stack/job/daos/job/PR-17584/1/display/redirect

[daosbuild3]

Test stage Functional Hardware Medium UCX Provider completed with status FAILURE. https://jenkins-3.daos.hpc.amslabs.hpecorp.net//job/daos-stack/job/daos/view/change-requests/job/PR-17584/2/execution/node/673/log