ftests: Add a test for cgroup_change_cgroup_path()

ftests: Add a test for cgroup_change_cgroup_path()

Add a functional test that exercises cgroup_change_cgroup_path()
via the python bindings.

-----------------------------------------------------------------
Test Results:
	Run Date:                          May 17 21:20:19
	Passed:                                  1 test(s)
	Skipped:                                 0 test(s)
	Failed:                                  0 test(s)
-----------------------------------------------------------------
Timing Results:
	Test                           Time (sec)
	-----------------------------------------
	setup                                0.00
	087-sudo-move_pid.py                 2.06
	teardown                             0.00
	-----------------------------------------
	Total Run Time

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