Description of problem: setting vm.unprivileged_userfaultfd failed


Version-Release number of selected component (if applicable): rhos17.1 on rhel8

Error logs:

2022-08-25 03:20:16.607019 | fa163e70-fa27-5970-b8a3-00000000096d |      FATAL | Set extra sysctl options | standalone | item=vm.unprivileged_userfaultfd | error={"ansible_loop_var": "setting", "changed": false, "msg": "setting vm.unprivileged_userfaultfd failed: sysctl: cannot stat /proc/sys/vm/unprivileged_userfaultfd: No such file or directory\n", "setting": {"key": "vm.unprivileged_userfaultfd", "opt": {"value": 1}}}
2022-08-25 03:20:16.608300 | fa163e70-fa27-5970-b8a3-00000000096d |     TIMING | tripleo_kernel : Set extra sysctl options | standalone | 0:02:58.615673 | 4.05s
2022-08-25 03:20:16.614282 | fa163e70-fa27-5970-b8a3-00000000096d |     TIMING | tripleo_kernel : Set extra sysctl options | standalone | 0:02:58.621653 | 4.05s

PLAY RECAP *********************************************************************
localhost                  : ok=1    changed=0    unreachable=0    failed=0    skipped=2    rescued=0    ignored=0   
standalone                 : ok=144  changed=78   unreachable=0    failed=1    skipped=47   rescued=0    ignored=1   
undercloud                 : ok=15   changed=5    unreachable=0    failed=0    skipped=0    rescued=0    ignored=1 


Actual results: Standalone deployment is failing on 17.1 on rhel8.


Expected results: Standalone deployment should pass.