DAOS-17049 control: Allow graceful shutdown for specific ranks (#16305)

[kjacque]

The CR checker tool needs to use a graceful shutdown when stopping ranks. It may select a subset of ranks if some are admin-excluded.

• Remove the limitation that non-forced shutdown may only be used on the whole system, not while specifying ranks.

Features: control recovery

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 'recovery/ms_membership.py:MSMembershipTest.test_checker_on_admin_excluded - errors with dmg check commands'
Status is 'Awaiting backport'
Labels: '2.6.3rc2,2.6.3rc3,2.6.3rc4,2.6.4rc1,ci-taskforce,ci_2.6_daily,ci_master_daily,daily_test,scrubbed_2.8'
Job should run at elevated priority (1)
https://daosio.atlassian.net/browse/DAOS-17049

[daosbuild3]

Test stage Unit Test 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-16521/1/testReport/

[kjacque]

Looks like the unit test changes are based on #16291, so there is a conflict without that patch.

[daosbuild3]

Test stage Unit Test 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-16521/2/testReport/

[kjacque]

#16291 has landed to the release/2.6 branch, so I've merged that change in and run unit tests locally to verify they now pass.

[daosbuild3]

Test stage Functional on EL 8.8 completed with status FAILURE. https://jenkins-3.daos.hpc.amslabs.hpecorp.net//job/daos-stack/job/daos/view/change-requests/job/PR-16521/3/execution/node/1138/log

[daosbuild3]

Test stage Functional on EL 8.8 completed with status FAILURE. https://jenkins-3.daos.hpc.amslabs.hpecorp.net//job/daos-stack/job/daos/view/change-requests/job/PR-16521/4/execution/node/430/log