DAOS-18696 test: Start the daos servers once and run the test cases.

[rpadma2]

Skip-unit-test: true
Skip-fault-injection-test: true
Skip-nlt: true
Test-tag: online_drain online_extend online_reintegration OSAOnlineParallelTest

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 'Remove start_servers_once from osa online tests'
Status is 'Open'
Labels: 'testp2'
https://daosio.atlassian.net/browse/DAOS-18696

[daosbuild3]

Test stage Functional Hardware Medium MD on SSD completed with status UNSTABLE. https://jenkins-3.daos.hpc.amslabs.hpecorp.net/job/daos-stack/job/daos//view/change-requests/job/PR-17719/1/testReport/