ftests: Add cgroup v2 cgrules test

ftests: Add cgroup v2 cgrules test

Add a simple cgrulesengd tests.  Note that it cannot run within
a container.

-----------------------------------------------------------------
Test Results:
	Run Date:                          Mar 01 16:56:22
	Passed:                                  1 test(s)
	Skipped:                                 0 test(s)
	Failed:                                  0 test(s)
-----------------------------------------------------------------
Timing Results:
	Test                                    Time (sec)
	---------------------------------------------------------
	setup                                         0.00
	007-cgrules-basic_cgrules_v2.py               7.13
	teardown                                      0.00
	---------------------------------------------------------
	Total Run Time                                7.13

Signed-off-by: Tom Hromatka <tom.hromatka@oracle.com>