ftests/092: add test to attach threads to cgroup (v1)

ftests/092: add test to attach threads to cgroup (v1)

Add test to attach/move all thread of a tid to cgroup using
cgroup_attach_thread_tid() in cgroup v1.

-----------------------------------------------------------------
Test Results:
        Run Date:                          Mar 13 09:52:58
        Passed:                                  1 test(s)
        Skipped:                                 0 test(s)
        Failed:                                  0 test(s)
-----------------------------------------------------------------
Timing Results:
        Test                                     Time (sec)
        ---------------------------------------------------
        setup                                          0.00
        092-sudo-cgroup_attach_thread_tid.py           0.09
        teardown                                       0.00
        ---------------------------------------------------
        Total Run Time                                 0.09

Signed-off-by: Kamalesh Babulal <kamalesh.babulal@oracle.com>
Signed-off-by: Tom Hromatka <tom.hromatka@oracle.com>