ftests: Add a cgexec test

ftests: Add a cgexec test

Add a basic cgexec test

-----------------------------------------------------------------
Test Results:
        Run Date:                          May 03 19:56:02
        Passed:                                  1 test(s)
        Skipped:                                 0 test(s)
        Failed:                                  0 test(s)
-----------------------------------------------------------------
Timing Results:
        Test                                    Time (sec)
        ---------------------------------------------------------
        setup                                        11.87
        034-cgexec-basic_cgexec.py                    2.55
        teardown                                      0.00
        ---------------------------------------------------------
        Total Run Time                               14.42

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